How to Configure Postfix to use Gmail as a Mail Relay

<div dir="ltr" style="text-align: left;" trbidi="on"> <div align="CENTER" style="line-height: 0.18in;"> <span style="color: red;"><span style="font-family: monospace;"><span style="font-size: x-large;"><i><u><b>Configure Postfix to use Gmail as a Mail Relay</b></u></i></span></span></span></div> <div align="CENTER"> <br /><br /> </div> <div style="line-height: 0.18in;"> <span style="font-family: monospace;"><span style="font-size: large;">If you have a Gmail account, you can configure your MTA to relay outgoing mail through Gmail. This gives you the benefit of Gmail's reliability and robust infrastructure, and provides you with a simple means of sending email from the command line.</span></span></div> <div style="line-height: 0.18in;"> <span style="font-family: monospace;"><span style="font-size: large;">In this tutorial, we will use <a href="http://www.hackthesec.co.in/search/label/postfix">Postfix</a> as our MTA. Postfix is a free, open-source, actively maintained, and highly secure <a href="http://www.hackthesec.co.in/search/label/Mail_Server">mail </a>transfer agent.</span></span></div> <div style="line-height: 0.18in;"> <span style="font-family: monospace;"><span style="font-size: large;">At each step, we'll cover instructions specific to the following operating systems:</span></span><span style="font-family: inherit;"><span style="font-size: large;">.</span></span></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://4.bp.blogspot.com/-62IVl8wadSY/VtVV-2kzD5I/AAAAAAAAA2U/AGD8W3I_4Aw/s1600/Gmail-Relay-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://4.bp.blogspot.com/-62IVl8wadSY/VtVV-2kzD5I/AAAAAAAAA2U/AGD8W3I_4Aw/s1600/Gmail-Relay-www.hackthesec.co.in.png" /></a></div> <div style="line-height: 0.18in;"> <br /></div> <div align="CENTER"> </div> <ul> <li><div align="LEFT" style="line-height: 0.18in; margin-bottom: 0in;"> <span style="font-family: monospace;"><span style="font-size: large;"><a href="http://www.hackthesec.co.in/search/label/Debian">Debian</a> 8</span></span> </div> </li> <li><div align="LEFT" style="line-height: 0.18in; margin-bottom: 0in;"> <a href="http://www.hackthesec.co.in/search/label/ubuntu-15.10"><span style="font-family: monospace;"><span style="font-size: large;">Ubuntu 15.10</span></span></a> </div> </li> <li><div align="LEFT" style="line-height: 0.18in; margin-bottom: 0in;"> <span style="font-family: monospace;"><span style="font-size: large;"><a href="http://www.hackthesec.co.in/search/label/centos7">CentOS </a>7</span></span> </div> </li> <li><div align="LEFT" style="line-height: 0.18in; margin-bottom: 0in;"> <span style="font-family: monospace;"><span style="font-size: large;"><a href="http://www.hackthesec.co.in/search/label/SUSE">OpenSUSE</a> 13.2</span></span> </div> </li> <li><div align="LEFT" style="line-height: 0.18in; margin-bottom: 0in;"> <span style="font-family: monospace;"><span style="font-size: large;">Arch Linux 2016.02.01</span></span> </div> </li> <li><div align="LEFT" style="line-height: 0.18in;"> <span style="font-family: monospace;"><span style="font-size: large;">FreeBSD 10.2</span></span> </div> </li> </ul> <br /><br /> <br /> <div style="line-height: 0.18in;"> <span style="font-family: monospace;"><span style="font-size: large;">We will also install mailutils/mailx so that we can send a test email. Where necessary, we will install supplemental SASL libraries.</span></span></div> <h2 class="western" style="background: #fdfdfd; line-height: 110%; margin-bottom: 0.1in; margin-top: 0.22in;"> <span style="color: #0b5394;"><span style="font-size: large;"><u>Ubuntu/Debian:-</u></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 142%; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: menlo, monaco, consolas, courier new, monospace;"><span style="font-size: large;"><span style="background: transparent;"># apt-get update && apt-get install postfix mailutils</span></span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">When prompted for "General type of mail configuration," choose </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">Internet Site</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">.</span></span></span></code></div> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">When prompted for a "Mail name," choose a hostname to be used in <a href="http://www.hackthesec.co.in/search/label/mail">mail</a> headers as the origin of your emails. A fully-qualified domain name is preferred, but using your machine's simple hostname is OK. Regardless of what you enter here, your return address will appear to recipients as your Gmail address.</span></span></span></code></div> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">You may be prompted to set the "Root and postmaster mail recipient." Enter </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">root</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, or another user who should receive mail subsystem notifications.</span></span></span></code></div> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">For any other prompts, you can choose the default values.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><u><span style="background: transparent none repeat scroll 0% 0%;">Fedora</span></u></code><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><u><span style="background: transparent none repeat scroll 0% 0%;"></span></u></span></code></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: small;"><span style="background: transparent;">dnf update && dnf install postfix mailx</span></span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><u><span style="background: transparent none repeat scroll 0% 0%;">CentOS</span></u></span></code></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">yum update && yum install postfix mailx cyrus-sasl cyrus-sasl-plain</span></span></span></span></code></pre> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><u><span style="background: transparent none repeat scroll 0% 0%;">OpenSUSE</span></u></code><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><u><span style="background: transparent none repeat scroll 0% 0%;"></span></u></span></code></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">zypper update && zypper install postfix mailx cyrus-sasl</span></span></span></span></code></pre> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 110%; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><u><span style="background: transparent none repeat scroll 0% 0%;">Arch Linux</span></u></code><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><u><span style="background: transparent none repeat scroll 0% 0%;"></span></u></span></code></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">pacman -Sy postfix mailutils</span></span></span></span></code></pre> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 110%; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><u><span style="background: transparent none repeat scroll 0% 0%;">FreeBSD</span></u></code></span></span></h2> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Compile <a href="http://www.hackthesec.co.in/search/label/postfix">Postfix </a>from the ports collection to incorporate support for SASL:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">portsnap fetch extract update</span></span></span></span></code> <code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">cd /usr/ports/mail/postfix</span></span></span></span></code> <code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">make config</span></span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">In the configuration dialogs, select </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">SASL support</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">. All other options can remain the same. Then:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">make install clean</span></span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Mailx can be installed from the binary package:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="font-size: large;"><span style="background: transparent;"># </span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">pkg install mailx</span></span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;">  <code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Configure Gmail Authentication</span></b></u></span></span></code></span></h2> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Create or modify a password file which will be used by Postfix to establish authentication with Gmail. In the authentication information below, replace </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">username</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"> with your Gmail username and </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">password</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"> with your Gmail password. If you are using a custom Gmail Apps domain name, you may replace </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">gmail.com</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"> with your Google Apps domain.<br />The password file will reside in the <a href="http://www.hackthesec.co.in/search/label/postfix">Postfix</a> configuration directory. The file can be named whatever you like, but the recommended filename is</span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">sasl_passwd</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><b><span style="background: transparent;">Debian, Ubuntu, Fedora, CentOS, OpenSUSE, Arch Linux:</span></b></u></span></span></code></span></h2> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Postfix configuration files reside in the directory </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">/etc/postfix</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">. Create or edit the password file:</span></span></span></code></div> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.35in; margin-bottom: 0.1in; padding: 0in; text-align: left;"><code class="western"><span style="font-variant: normal;"><span style="font-size: large;"><span style="font-style: normal;"><span style="font-weight: normal;"><span style="background: transparent;"># </span></span></span></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">vi /etc/postfix/sasl_passwd</span></span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Add the line:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: menlo, monaco, consolas, courier new, monospace;"><span style="font-size: large;"><span style="background: transparent;">[smtp.gmail.com]:587   username@gmail.com:password</span></span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <span style="font-family: inherit;"><span style="font-size: large;"><code class="western"><span style="background: #ffffff;">Save and close the file. Your Gmail password is stored as plaintext, so make the file accessible only by root:</span></code></span></span></div> <pre class="western" style="background: #f5f5f5; border: 1px solid #cccccc; line-height: 0.19in; margin-bottom: 0.1in; padding: 0.09in;"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><code class="western"><span style="background: transparent;"># chmod 600 /etc/postfix/sasl_passwd</span></code></span></span></span></pre> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><code class="western"><u><b><span style="background: transparent none repeat scroll 0% 0%;">FreeBSD:</span></b></u></code></span></span></h2> <div style="border: none; line-height: 0.18in; padding: 0in;"> <span style="font-family: inherit;"><span style="font-size: large;"><code class="western"><span style="background: transparent;">Postfix configuration files reside in the directory </span></code><code class="western"><b><span style="background: transparent;">/usr/local/etc/postfix</span></b></code><code class="western"><span style="background: transparent;">. Create or edit the password file:</span></code></span></span></div> <pre class="western" style="background: #f5f5f5; border: 1px solid #cccccc; line-height: 0.19in; margin-bottom: 0.1in; padding: 0.09in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><span style="background: transparent;"># vi /usr/local/etc/postfix/sasl_passwd</span></span></span></code></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <span style="font-family: inherit;"><span style="font-size: large;"><code class="western"><span style="background: transparent;">Add the line:</span></code></span></span></div> <pre class="western" style="background: #f5f5f5; border: 1px solid #cccccc; line-height: 0.19in; margin-bottom: 0.1in; padding: 0.09in;"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><code class="western"><span style="background: transparent;">[smtp.gmail.com]:587 username@gmail.com:password</span></code></span></span></span></pre> <div style="border: none; line-height: 0.18in; padding: 0in;"> <span style="font-family: inherit;"><span style="font-size: large;"><code class="western"><span style="background: transparent;">Save and close the file. Make it accessible only by root:</span></code></span></span></div> <pre class="western" style="background: #f5f5f5; border: 1px solid #cccccc; line-height: 0.19in; margin-bottom: 0.1in; padding: 0.09in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><span style="background: transparent;">#chmod 600 /usr/local/etc/postfix/sasl_passwd</span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: x-large;"><u><b><code class="western"><span style="background: transparent;">Configure Postfix</span></code></b></u></span></span></span></h2> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">There are six parameters which must be set in the Postfix configuration file </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">main.cf</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">. The parameters are:</span></span></span></code></div> <div style="border: none; line-height: 0.18in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"><br /></span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">relayhost</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, which specifies the mail relay host and port number. The host name will be enclosed in brackets to specify that no MX lookup is required.</span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">smtp_use_tls</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, which enables (or disables) transport layer security.</span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">smtp_sasl_auth_enable</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, which enables (or disables) SASL authentication.</span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">smtp_sasl_security_options</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, which in the following configuration will be set to empty, to ensure that no Gmail-incompatible security options are used.<br />smtp_sasl_password_maps, which specifies the password file to use. This file will be compiled and hashed by </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">postmap</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"> in a later step.</span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">smtp_tls_CAfile</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">, which specifies the list of certificate authorities to use when verifying server identity.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><span style="background: transparent;">Debian, Ubuntu, Arch Linux:</span></u></span></span></code></span></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Edit the main Postfix configuration file:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><span style="background: transparent;">#</span></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">vi /etc/postfix/main.cf</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Add or modify the following values:</span></span></span></code></div> <pre class="western" style="background: rgb(245, 245, 245) none repeat scroll 0% 0%; border: medium none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><span style="font-size: large;"><code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">relayhost = [smtp.gmail.com]:587</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_use_tls = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_auth_enable = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_security_options =</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd</span></span></code> <code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt</span></span></span></code></span></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Save and close the file.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><b><span style="background: transparent;">Fedora, CentOS:</span></b></u></span></span></code></span></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Edit the main Postfix configuration file:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">#vi /etc/postfix/main.cf</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Add or modify the following values:</span></span></span></code></div> <pre class="western" style="background: rgb(245, 245, 245) none repeat scroll 0% 0%; border: medium none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><span style="font-size: large;"><code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">relayhost = [smtp.gmail.com]:587</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_use_tls = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_auth_enable = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_security_options =</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd</span></span></code> <code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt</span></span></span></code></span></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Save and close the file.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><b><span style="background: transparent;">OpenSUSE:</span></b></u></span></span></code></span></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Edit the main Postfix configuration file:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">#vi /etc/postfix/main.cf</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <span style="font-size: x-large;"><code class="western"><span style="font-family: inherit;"><span style="background: transparent none repeat scroll 0% 0%;">Add or modify the following values:</span></span></code></span></div> <span style="font-size: x-large;"> </span><pre class="western" style="background: rgb(245, 245, 245) none repeat scroll 0% 0%; border: medium none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><span style="font-size: large;"><code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">relayhost = [smtp.gmail.com]:587</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_use_tls = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_auth_enable = yes</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_security_options =</span></span></code> <code class="western"><span style="color: #333333;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd</span></span></code> <code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="background: transparent none repeat scroll 0% 0%;">smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt</span></span></span></code></span></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Save and close the file.</span></span></span></code></div> <div style="border: none; padding: 0in;"> <br /></div> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-size: large;"><span style="background: transparent;">OpenSUSE also requires that the Postfix master process configuration file master.cf be modified. Open it for editing:</span></span></code></div> <div style="border: none; padding: 0in;"> <br /> </div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><span style="font-size: large;"><code class="western"><span style="color: #333333;"><b><span style="background: transparent;">#</span></b></span></code><code class="western"><span style="color: #333333;"><span style="background: transparent;">vi /etc/postfix/master.cf</span></span></code></span></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Locate the line which reads:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: menlo, monaco, consolas, courier new, monospace;"><span style="font-size: large;"><span style="background: transparent;">#tlsmgr unix - - n 1000? 1 tlsmg</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Uncomment it, so it reads:</span></span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: menlo, monaco, consolas, courier new, monospace;"><span style="font-size: large;"><span style="background: transparent;">tlsmgr unix - - n 1000? 1 tlsmg</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Save and close the file.</span></span></span></code></div> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><span style="font-size: large;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><code class="western"><u><b><span style="background: transparent none repeat scroll 0% 0%;">FreeBSD:</span></b></u></code></span></span></span></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;">Edit the main Postfix configuration file:</span></span></code></div> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b>#</b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">vi /usr/local/etc/postfix/main.cf</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;">Add or modify the following values:</span></span></code></div> <pre class="western" style="background: rgb(245, 245, 245) none repeat scroll 0% 0%; border: medium none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><span style="font-size: large;"><code class="western"><span style="color: #333333;">relayhost = [smtp.gmail.com]:587</span></code> <code class="western"><span style="color: #333333;">smtp_use_tls = yes</span></code> <code class="western"><span style="color: #333333;">smtp_sasl_auth_enable = yes</span></code> <code class="western"><span style="color: #333333;">smtp_sasl_security_options =</span></code> <code class="western"><span style="color: #333333;">smtp_sasl_password_maps = hash:/usr/local/etc/postfix/sasl_passwd</span></code> <code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;">smtp_tls_CAfile = /etc/mail/certs/cacert.pem</span></span></code></span></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;">Save and close the file.</span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><b><span style="background: transparent;">Process Password File</span></b></u></span></span></code></span></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Use postmap to compile and hash the contents of sasl_passwd. The results will be stored in your Postfix configuration directory in the file sasl_passwd.db.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="color: red;"><code class="western"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: medium;"><u><b><span style="background: transparent;">Debian, Ubuntu, Fedora, CentOS, OpenSUSE, Arch Linux:</span></b></u></span></span></code></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">postmap /etc/postfix/sasl_passwd</span></span></span></span></code></pre> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="font-size: large;"><code class="western"><span style="color: #0b5394;"><u><span style="background: transparent none repeat scroll 0% 0%;">FreeBSD</span></u></span></code><code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><u><b><span style="background: transparent none repeat scroll 0% 0%;"></span></b></u></span></span></code></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">postmap /usr/local/etc/postfix/sasl_passwd</span></span></span></span></code></pre> <h2 align="CENTER" class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Restart Postfix</span></b></u></span></span></span></code></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Restart the Postfix service, putting your changes into effect.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Debian, Ubuntu, Fedora, CentOS, OpenSUSE, Arch Linux:</span></b></u></span></span></span></code></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">systemctl restart postfix.service</span></span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><span style="background: transparent;">FreeBSD:</span></u></span></span></span></code></h2> <div style="border: none; line-height: 0.27in; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">To start the Postfix service for this session only:</span></span></span></code></div> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">service postfix onestart</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">To start Postfix automatically when the system initializes, open </span></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><b><span style="background: transparent;">/etc/rc.conf</span></b></span></span></code><code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;"> for editing:</span></span></span></code></div> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">vi /etc/rc.conf</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Add the line:</span></span></span></code></div> <br /> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><span style="background: transparent;">postfix_enable=YES</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Save and close the file. You may then run:</span></span></span></code></div> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-size: large;"><b><span style="background: transparent;">#</span></b></span></span></code><code class="western"><span style="color: #333333;"><span style="font-family: "menlo", "monaco", "consolas", "courier new", monospace;"><span style="font-size: large;"><span style="background: transparent;">service postfix start</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">To start Postfix.</span></span></span></code></div> <h2 align="CENTER" class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Enable "Less Secure Apps" In Gmail</span></b></u></span></span></span></code></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">By default, only the most secure sign-ins, such as logging in to Gmail on the web, are allowed for your Gmail account. To permit relay requests, log in to your Gmail account and turn on Allow less secure apps.</span></span></span></code></div> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">For more information, review the Google Support document "<a href="https://support.google.com/accounts/answer/6010255">Allowing less secure apps to access your account</a>."</span></span></span></code></div> <h2 align="LEFT" class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><span style="background: transparent;">Send A Test Email</span></u></span></span></span></code></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Test your new configuration by sending an email using the <a href="http://www.hackthesec.co.in/search/label/mail">mail </a>command. Run:</span></span></span></code></div> <br /> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><b><span style="background: transparent;">mail -s "Test subject" recipient@domain.com</span></b></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">You will be presented with a blank line (or a CC: field, which you can bypass by pressing Enter). Type the body of your message, pressing Enter for new lines. When you are finished composing the email, type CTRL-D to send it. To cancel the email, press CTRL-C twice.</span></span></span></code></div> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">To send a precomposed email, use the command:</span></span></span></code></div> <br /> <br /> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><b><span style="background: transparent;">mail -s "Subject Here" recipient@domain.com < textfile</span></b></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">Where textfile is the name of a file containing the text to be sent.</span></span></span></code></div> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Troubleshooting(Through Log)</span></b></u></span></span></span></code></h2> <div style="border: none; padding: 0in;"> <code class="western"><span style="font-family: inherit;"><span style="font-size: large;"><span style="background: transparent;">If it's not working, check the logs for any Postfix errors:</span></span></span></code></div> <h2 class="western" style="background: rgb(253, 253, 253) none repeat scroll 0% 0%; border: medium none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <span style="font-family: inherit;"><span style="font-size: x-large;"><code class="western"><span style="color: #0b5394;"><u><b><span style="background: transparent none repeat scroll 0% 0%;">Debian:</span></b></u></span></code></span></span></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><span style="background: transparent;">less /var/log/mail.log</span></span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><b><span style="background: transparent;">Ubuntu, Fedora, CentOS, OpenSUSE, Arch Linux:</span></b></u></span></span></span></code></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><span style="background: transparent;">journalctl</span></span></span></span></code></pre> <h2 class="western" style="background: #fdfdfd; border: none; line-height: 0.27in; margin-bottom: 0.1in; margin-top: 0.22in; padding: 0in;"> <code class="western"><span style="color: #0b5394;"><span style="font-family: "helvetica neue", "helvetica", "arial", sans-serif;"><span style="font-size: large;"><u><span style="background: transparent;">FreeBSD:</span></u></span></span></span></code></h2> <pre class="western" style="background: #f5f5f5; border: none; line-height: 0.19in; margin-bottom: 0.1in; padding: 0in;"><code class="western"><span style="color: #333333;"><span style="font-family: "times new roman";"><span style="font-size: large;"><span style="background: transparent;">less /var/log/maillog</span></span></span></span></code></pre> <div style="border: none; padding: 0in;"> <br /><br /> </div> <a href="http://hackthesec.co.in/">Hackthesec.co.in</a><br /> <div style="margin-bottom: 0in;"> <br /> </div> </div>

How to Configure Postfix to use Gmail as a Mail Relay

Configure Postfix to use Gmail as a Mail Relay If you have a Gmail account, you can configure your MTA to relay outgoing mail throug...

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How to Install iRedMail (Mail Server) on CentOS 7 and RHEL 7

<div dir="ltr" style="text-align: left;" trbidi="on"> <h1 class="post-title" style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 38px; font-stretch: inherit; letter-spacing: -1px; line-height: 1.3em; margin: 0px 0px 10px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="color: red;"><u><i>Install iRedMail (Mail Server) on CentOS 7 & RHEL 7</i></u></span></h1> <div> <span style="color: red;"><u><i><br /></i></u></span></div> <div> <span style="background-color: white; text-align: justify;"><span style="font-family: "pt" serif , serif; font-size: large;"><span style="line-height: 22.4px;">iRedMail is a full-featured <a href="http://www.hackthesec.co.in/search/label/Mail_Server" target="_blank">mail server</a> solution, it provides basic features like unlimited virtual mail accounts, POP3/IMAP/SMTP, AJAX webmail. Below are some highlights :</span></span></span><br /> <span style="background-color: white; text-align: justify;"><span style="font-family: "pt" serif , serif; font-size: large;"><span style="line-height: 22.4px;"><br /></span></span></span></div> <div> <div class="info" style="background-image: url("../images/info.png"); background-position: 11px 50%; background-repeat: no-repeat; color: #333333; font-family: 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size: 13.8px; line-height: 20.7px; margin: 0px; padding: 10px 50px;"> <strong>Highlight features</strong></div> <ul class="info-list" style="color: #333333; font-family: 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size: 13.8px; line-height: 20.7px; margin: 0px; padding: 0.5em 0px 0px 2em;"> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#supported_distro_arch" style="color: #00579c;">Works on 7 Major Linux/BSD Distributions</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#fast_deployment" style="color: #00579c;">Fast Deployment, Low Maintenance, Unlimited Accounts</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#supported_backends" style="color: #00579c;">Stores Mail Accounts in one of supported 4 backends: OpenLDAP, MySQL, MariaDB and PostgreSQL</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#caldav_carddav" style="color: #00579c;">Calendar service (CalDAV) and Contact service (CardDAV)</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#service_restrictions" style="color: #00579c;">Service Restrictions</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#throttling" style="color: #00579c;">Sender & Recipient Throttling</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#antispam" style="color: #00579c;">Anti-Spam & Anti-Virus</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#webmail" style="color: #00579c;">WebMail: AJAX, Global LDAP Address Book, Vacation, Filter</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#misc" style="color: #00579c;">Misc</a></span></li> <li style="color: #6a97bf; margin: 0px 0px 0.7em; padding: 0px; text-align: left;"><span style="color: #666666;"><a href="http://www.iredmail.org/features.html#process" style="color: #00579c;">Main components and working process</a></span></li> </ul> <div class="separator" style="clear: both; text-align: center;"> <a href="https://4.bp.blogspot.com/-Boqbz4hCC7U/VsLz3Y69mTI/AAAAAAAAAfU/TktmNYXiByI/s1600/iredmail-logo_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://4.bp.blogspot.com/-Boqbz4hCC7U/VsLz3Y69mTI/AAAAAAAAAfU/TktmNYXiByI/s1600/iredmail-logo_www.hackthesec.co.in.png" /></a></div> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;"><br /></span> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;">In this article we will demonstrate how to install and configure iRedMail on CentOS 7 & RHEL 7. </span></div> <div> <ul style="text-align: left;"> <li><span style="background-color: white; font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit;"><span style="font-size: large;">   OS = CentOS 7 or RHEL 7</span></span></li> <li><span style="background-color: white; font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit;"><span style="font-size: large;">   Domain = hackthesec.co.in</span></span></li> <li><span style="background-color: white; font-family: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit;"><span style="font-size: large;">   Server Hostname = mail.hackthesec.co.in</span></span></li> </ul> </div> <blockquote class="tr_bq"> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;"> In case if you want mails from your mail server to be delivered in inbox not in spam folder then update the DNS records like A & PTR  before installation and TXT ( SPF & DKIM ) after installation.</span></blockquote> <h4 style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 24px; font-stretch: inherit; font-weight: 400; letter-spacing: -0.3px; line-height: 1.3em; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:1 Set hostname and disable Selinux.</span></span></h4> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Set the proper hostname using <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">hostnamectl</span> command if it is not set.</div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-family: monaco, 'courier new', 'dejavu sans mono', 'bitstream vera sans mono', monospace; font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="color: white; font-size: large;">[root@hackthesec ~]# </span><span style="color: lime; font-size: large;">hostnamectl </span><span style="color: white; font-size: large;">set-hostname mail.hackthesec.co.in [root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="font-size: large;"><span style="color: white;"> ~]# </span><span style="color: lime;">hostname </span><span style="color: white;">-f</span></span><span style="color: white;"> </span><span style="color: white; font-size: large;">mail.hackthesec.co.in</span></pre> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Update the <span style="color: #990000;">/etc/hosts</span> file</span></div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); color: white; font-family: monaco, 'courier new', 'dejavu sans mono', 'bitstream vera sans mono', monospace; font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-size: large;">127.0.0.1 mail.hackthesec.co.in localhost.localdomain localhost</span></pre> <div style="background-color: white; border: 0px; font-family: 'pt serif', serif; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Disable <span style="color: #990000;">Selinux</span></span></div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-family: monaco, 'courier new', 'dejavu sans mono', 'bitstream vera sans mono', monospace; font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="font-size: large;"><span style="color: white;"> ~]# </span><span style="color: lime;">setenforce </span><span style="color: white;">0</span></span></pre> <div style="background-color: white; border: 0px; font-family: 'pt serif', serif; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="font-size: large;">Edit the file /<span style="color: red;">etc/sysconfig/selinux</span> , set the parameter “<span style="border: 0px; font-family: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: red;">SELINUX=disabled</span>”</span> , Reboot the server to disable selinux completely.</span></div> <h4 style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 24px; font-stretch: inherit; font-weight: 400; letter-spacing: -0.3px; line-height: 1.3em; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:2 Download the tar file of iRedmail.</span></span></h4> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Download the latest version of iRedmail from their <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="border: 0px; color: #333399; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><a href="http://www.iredmail.org/download.html" style="border: 0px; color: #333399; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; outline: 0px; padding: 0px; text-decoration: none; transition-duration: 0.2s; transition-timing-function: ease; vertical-align: baseline;" target="_blank">Official Web Site</a></span></span> or use below wget command to download from terminal.</div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: white; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace; font-size: large; line-height: 19px; white-space: pre-wrap;">[root@</span><span style="color: white; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace; font-size: large; line-height: 19px; white-space: pre-wrap;">hackthesec</span><span style="font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace; font-size: large; line-height: 19px; white-space: pre-wrap;"><span style="color: white;"> ~]# wget </span></span><span style="background-color: transparent; line-height: 19px; white-space: pre-wrap;"><span style="color: lime; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace; font-size: large;">https://bitbucket.org/zhb/iredmail/downloads/iRedMail-0.9.4.tar.bz2</span></span></pre> <h4 style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 24px; font-stretch: inherit; font-weight: 400; letter-spacing: -0.3px; line-height: 1.3em; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:3 Extract the tar file & execute installation Script.</span></span></h4> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-family: monaco, 'courier new', 'dejavu sans mono', 'bitstream vera sans mono', monospace; font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="color: white; font-size: large;"> ~]# ll</span><span style="color: white;"> </span><span style="color: white; font-size: large;">total 124 </span><span style="color: lime; font-size: large;">-rw-r--r-- 1 root root 126277 Feb 15 19:12 iRedMail-0.9.4.tar.bz2 </span><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="color: white; font-size: large;"> ~]#</span><span style="color: white;"> </span><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="font-size: large;"><span style="color: white;"> ~]# tar -jxvf </span><span style="color: lime;">iRedMail-0.9.4.tar.bz2</span></span><span style="color: white;"> </span><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="color: white; font-size: large;"> ~]# cd iRedMail-0.9.4</span><span style="color: white;"> </span><span style="color: white; font-size: large;">[root@</span><span style="color: white; font-size: large;">hackthesec</span><span style="color: white; font-size: large;"> iRedMail-0.9.4]# </span><span style="font-size: large;"><span style="color: lime;">sh iRedMail.sh</span></span></pre> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;">After couple of seconds , below screen will appear , Select yes and press enter.</span><br /> <div class="separator" style="clear: both; text-align: center;"> <a href="https://2.bp.blogspot.com/-9TQZ5xzWiRs/VsLU1RIpb9I/AAAAAAAAAeE/7Auoryybst4/s1600/iRedmail-installation-welcome-message_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="309" src="https://2.bp.blogspot.com/-9TQZ5xzWiRs/VsLU1RIpb9I/AAAAAAAAAeE/7Auoryybst4/s640/iRedmail-installation-welcome-message_www.hackthesec.co.in.jpg" width="640" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px; text-align: left;"><br /></span></div> <div class="separator" style="clear: both; text-align: center;"> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px; text-align: left;">Define the folder or directory where users mailbox will be stored.</span></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://4.bp.blogspot.com/-BUoeSUXQb7I/VsLU10nuxEI/AAAAAAAAAeM/OLD_jnhqYhQ/s1600/iredmail-users-mailbox-location_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="294" src="https://4.bp.blogspot.com/-BUoeSUXQb7I/VsLU10nuxEI/AAAAAAAAAeM/OLD_jnhqYhQ/s640/iredmail-users-mailbox-location_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Select the web Server for iRedmail. Default is Nginx.</div> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://1.bp.blogspot.com/-kjLFQdDvc2k/VsLU01fFAAI/AAAAAAAAAeY/nD66lXDSWGI/s1600/Webserver-for-iRedmail_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="322" src="https://1.bp.blogspot.com/-kjLFQdDvc2k/VsLU01fFAAI/AAAAAAAAAeY/nD66lXDSWGI/s640/Webserver-for-iRedmail_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <br /></div> <div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Select the database of your choice which will store domain names and mail accounts. In my case i am using MariaDB.</div> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://1.bp.blogspot.com/-fvlcKaTJ5CA/VsLU2KV9cBI/AAAAAAAAAeY/wEsaHzKhRt8/s1600/mariadb-iredmail_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="312" src="https://1.bp.blogspot.com/-fvlcKaTJ5CA/VsLU2KV9cBI/AAAAAAAAAeY/wEsaHzKhRt8/s640/mariadb-iredmail_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <br /></div> <div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Define the domain name for your mail server. In my case domain name is “<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">hackthesec.co.in</span>”</div> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://4.bp.blogspot.com/-pHIXBvzYgss/VsLU0ym31dI/AAAAAAAAAeY/G2uPUltqAXM/s1600/domain-name-for-iredmail_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="302" src="https://4.bp.blogspot.com/-pHIXBvzYgss/VsLU0ym31dI/AAAAAAAAAeY/G2uPUltqAXM/s640/domain-name-for-iredmail_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <br /></div> <div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Set Password for postmaster account.</div> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://3.bp.blogspot.com/-w-i40oeyoUA/VsLU2YHgb2I/AAAAAAAAAeY/loCLgaeu9co/s1600/postmaster-password-iredmail_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="314" src="https://3.bp.blogspot.com/-w-i40oeyoUA/VsLU2YHgb2I/AAAAAAAAAeY/loCLgaeu9co/s640/postmaster-password-iredmail_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <br /></div> <div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Select Optional Components of iRedmail installation</div> </div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://3.bp.blogspot.com/-cqRG07X5FL0/VsLU01dEJWI/AAAAAAAAAeY/O4uuMlYY3rA/s1600/components-iredmail_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="308" src="https://3.bp.blogspot.com/-cqRG07X5FL0/VsLU01dEJWI/AAAAAAAAAeY/O4uuMlYY3rA/s640/components-iredmail_www.hackthesec.co.in.jpg" width="640" /></a></div> <div> <br /></div> <div> <br /></div> <div> <span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;">Press “</span><span style="background-color: white; border: 0px; font-family: "pt serif" , serif; font-size: 16px; font-stretch: inherit; font-weight: 600; line-height: 22.4px; margin: 0px; padding: 0px; vertical-align: baseline;">y</span><span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;">” to continue installation, Mail Server info & Credentials are kept in the file “</span><span style="background-color: white; border: 0px; font-family: "pt serif" , serif; font-size: 16px; font-stretch: inherit; font-weight: 600; line-height: 22.4px; margin: 0px; padding: 0px; vertical-align: baseline;">/root/iRedMail-0.9.4/config”</span><span style="background-color: white; font-family: "pt serif" , serif; font-size: 16px; line-height: 22.4px;">. Please keep this file in secure place.</span></div> <div class="separator" style="clear: both; text-align: center;"> </div> <div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace;"><span style="line-height: 19px; white-space: pre-wrap;">************************************************************************* *****************************WARNING************************************* ************************************************************************* * * Below file contains sensitive information (username/password), please * * do remember to *MOVE* it to a safe place after installation. * * * * * /root/iRedMail-0.9.4/config * * ************************************************************************* *****************************Review your settings************************ ************************************************************************* * Storage base directory: /var/vmail * Mailboxes: /var/vmail/vmail1 * Daily backup of SQL/LDAP databases: /var/vmail/backup * Store mail accounts in: MariaDB * Web server: Nginx * First mail domain name: hackthesec.co.in * Mail domain admin: postmaster@hackthesec.co.in * Additional components: iRedAdmin Roundcubemail SOGo Awstats Fail2ban < Question > Continue? [y|N]y</span></span></pre> </div> <div> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace;"><span style="line-height: 19px; white-space: pre-wrap;">***************************************************************** *URL of Installed web applications: * * - Roundcube webmail: https://mail.hackthesec.co.in/mail * - SOGo groupware: https://mail.hackthesec.co.in/SOGo/ * * - Web admin panel (iRedAdmin): https://mail.hackthesec.co.in/iredadmin/ * * You can login to above links with below credential: * * - Username: postmaster@hackthesec.co.in * - Password: 123456 * * ****************************************************************** * Congratulations, mail server setup completed successfully. * Please read the below file for more information: * * - /root/iRedMail-0.9.4/iRedMail.tips * * And it's sent to your mail account postmaster@hackthesec.co.in * **************************WARNING********************************** * *Please reboot your system to enable all mail services. * ***************************************************************</span></span></pre> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> As per instructions , reboot the server to enable all mail services.</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Postfix mail logs and iRedmail logs are stored in “<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">/var/log/maillog</span>” and “<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">/var/log/iredapd/iredapd.log</span>” respectively.</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Note :</span></span> Default administrator name is “postmaster@hackthesec.co.in”</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Following are the Important URLs after the Installation is completed , replace the domain name as per your setup in mentioned URLs.</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">iRedAdmin – official web-based admin panel:</span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">https://mail.hackthesec.co.in/iredadmin/</span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Username: postmaster@<span style="line-height: 22.4px;">hackthesec.co.in</span>, password: 123456</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Roundcube webmail URL :</span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">http://mail.<span style="line-height: 22.4px;">hackthesec.co.in</span>/mail/</span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">SOGo Groupware</span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">https://mail.<span style="line-height: 22.4px;">hackthesec.co.in</span>/SOGo/</span></div> <h4 style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 24px; font-stretch: inherit; font-weight: 400; letter-spacing: -0.3px; line-height: 1.3em; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:4 Create Users & domain from Admin Panel.</span></span></h4> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="color: #0b5394;"><span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"></span></span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> To create users first login to admin panel. Use user name as “<span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">postmaster@<domain></span>” and password that we set during installation.</div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://2.bp.blogspot.com/-U4y2SiPcI0o/VsLvb3y6XsI/AAAAAAAAAek/cNCfxkDx9iY/s1600/postmaster-login_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="238" src="https://2.bp.blogspot.com/-U4y2SiPcI0o/VsLvb3y6XsI/AAAAAAAAAek/cNCfxkDx9iY/s640/postmaster-login_www.hackthesec.co.in.png" width="640" /></a></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <br /></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> After Login Done. Create a user...</div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://2.bp.blogspot.com/-pJen-mwGZBE/VsLwVBLKXHI/AAAAAAAAAes/7EIW50lXXjo/s1600/usercreation_iredmail_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="332" src="https://2.bp.blogspot.com/-pJen-mwGZBE/VsLwVBLKXHI/AAAAAAAAAes/7EIW50lXXjo/s640/usercreation_iredmail_www.hackthesec.co.in.png" width="640" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://2.bp.blogspot.com/-vqllPMJR3JI/VsLwrFLHImI/AAAAAAAAAew/onwUKuNeZ6U/s1600/useradd_iredmail_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="364" src="https://2.bp.blogspot.com/-vqllPMJR3JI/VsLwrFLHImI/AAAAAAAAAew/onwUKuNeZ6U/s640/useradd_iredmail_www.hackthesec.co.in.png" width="640" /></a></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Add a new Domain :</span></span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> From the admin Panel , Select “<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Domain & accounts”</span> option and then click on Add domain</div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://2.bp.blogspot.com/-bUN_3uV7h5A/VsLx2eJxBZI/AAAAAAAAAfA/gDNLf6NLeK0/s1600/domain_add_iredmail_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="274" src="https://2.bp.blogspot.com/-bUN_3uV7h5A/VsLx2eJxBZI/AAAAAAAAAfA/gDNLf6NLeK0/s640/domain_add_iredmail_www.hackthesec.co.in.png" width="640" /></a></div> <div class="separator" style="clear: both; text-align: center;"> <a href="https://4.bp.blogspot.com/-l4mh7Aah7hY/VsLyfudw18I/AAAAAAAAAfI/wwzDsx0eTdI/s1600/domain-add_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://4.bp.blogspot.com/-l4mh7Aah7hY/VsLyfudw18I/AAAAAAAAAfI/wwzDsx0eTdI/s640/domain-add_www.hackthesec.co.in.png" width="640" /></a></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <span style="border: 0px; font-family: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394; font-size: large;">Step:5 Access Roundcube (Webmail).</span></span></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> Open the url in the browser “<span style="border: 0px; color: navy; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">https://mail.hackthesec.co.in/mail/</span>” , replace the domain name as per your setup.</div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <br /></div> <div style="background-color: white; border: 0px; font-family: 'PT Serif', serif; font-size: 16px; font-stretch: inherit; line-height: 22.4px; margin-bottom: 1em; padding: 0px; vertical-align: baseline;"> <a href="http://www.hackthesec.co.in/" target="_blank">www.hackthesec.co.in</a><br /> <a href="https://www.twitter.com/hackthesecurity" target="_blank">HackTheSecTwitter</a></div> </div> </div>

How to Install iRedMail (Mail Server) on CentOS 7 and RHEL 7

Install iRedMail (Mail Server) on CentOS 7 & RHEL 7 iRedMail is a full-featured mail server solution, it provides basic features ...

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How to Install Dovecot to configure POP/IMAP server

<div dir="ltr" style="text-align: left;" trbidi="on"> <span style="color: red; font-size: large;"><b><i>Install Dovecot to configure POP/IMAP server. POP uses 110/TCP, IMAP uses 143/TCP.</i></b></span><br /> <span class="Apple-tab-span" style="white-space: pre;"> </span><br /> <h5 style="background-color: white; border: 0px; font-stretch: inherit; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="color: #333333; font-family: PT Serif, serif;"><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">Dovecot is an open-source </span><span style="font-size: 16px; line-height: 22.4px;">IMAP </span><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">and </span><span style="font-size: 16px; line-height: 22.4px;">POP3 </span><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">server for </span><span style="font-size: 16px; line-height: 22.4px;"><a href="http://www.hackthesec.co.in/search/label/Linux" target="_blank">Linux</a>/<a href="http://www.hackthesec.co.in/search/label/Unix" target="_blank">UNIX</a></span><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">-like systems, written primarily with security in mind. </span><span style="font-size: 16px; line-height: 22.4px;">Timo Siraine</span><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">n originated Dovecot and first released it in July 2002. Dovecot developers primarily aim to produce a lightweight, fast and easy-to-set-up open-source mailserver.</span></span></h5> <div class="separator" style="clear: both; text-align: center;"> <a href="https://1.bp.blogspot.com/-2jUOfCdC-UE/VsHCkaGQAyI/AAAAAAAAAdY/Ceo4P6dRwIc/s1600/dovecot_mail_server_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="139" src="https://1.bp.blogspot.com/-2jUOfCdC-UE/VsHCkaGQAyI/AAAAAAAAAdY/Ceo4P6dRwIc/s320/dovecot_mail_server_www.hackthesec.co.in.png" width="320" /></a></div> <br /> <h5 style="background-color: white; border: 0px; font-stretch: inherit; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="color: #333333; font-family: PT Serif, serif;"><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">According to Openemailsurvey Dovecot has an installed base of over 2.9 million email servers all over the world and a global market share of 57% of all IMAP servers. While Dovecot software can be used in commercial use without any license fees, a commercial version is also available as Dovecot Pro. The commercial version is provided by Dovecot Oy along with support and enterprise add-ons such as the object storage and full-text search plugins. Since March 2015, Dovecot Oy has been part of the Open-Xchange Family.</span></span></h5> <br /> <ul style="text-align: left;"> <li><a href="http://www.hackthesec.co.in/2016/02/install-and-configure-postfix-to.html" target="_blank"><span style="font-size: large;">Install Postfix to configure SMTP server. SMTP uses 25/TCP</span></a></li> </ul> <br /> <span style="font-family: Georgia, Times New Roman, serif;"><br /></span> <span style="color: #0b5394; font-family: Georgia, Times New Roman, serif; font-size: large;">1.Install Dovecot.</span><br /> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;">[root@mail ~]# yum -y install dovecot</span></span></pre> <h5 style="background-color: white; border: 0px; font-stretch: inherit; margin: 0px 0px 14px; padding: 0px; vertical-align: baseline; word-wrap: break-word;"> <span style="color: #333333; font-family: PT Serif, serif;"><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">Dovecot  Configuration</span></span></h5> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;">[root@mail ~]# vi /etc/dovecot/dovecot.conf # line 24: uncomment protocols = imap pop3 lmtp # line 30: uncomment and change ( if not use IPv6 ) listen = *</span></span></pre> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;"> [root@mail ~]# vi /etc/dovecot/conf.d/10-auth.conf # line 10: uncomment and change ( allow plain text auth ) disable_plaintext_auth = no # line 100: add auth_mechanisms = plain login</span></span></pre> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;"> [root@mail ~]# vi /etc/dovecot/conf.d/10-mail.conf # line 30: uncomment and add mail_location = maildir:~/Maildir</span></span></pre> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;"> [root@mail ~]# vi /etc/dovecot/conf.d/10-master.conf # line 96-98: uncomment and add like follows # Postfix smtp-auth unix_listener /var/spool/postfix/private/auth { mode = 0666 user = postfix group = postfix }</span></span></pre> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;"> [root@mail ~]# vi /etc/dovecot/conf.d/10-ssl.conf # line 8: change (not require SSL) ssl = no</span></span></pre> <pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline;"><span style="color: lime; font-family: Monaco, Courier New, DejaVu Sans Mono, Bitstream Vera Sans Mono, monospace; font-size: medium;"><span style="line-height: 19px; white-space: pre-wrap;"> [root@mail ~]# systemctl start dovecot [root@mail ~]# systemctl enable dovecot </span></span></pre> <span style="color: #0b5394; font-family: Georgia, Times New Roman, serif;"><a href="http://www.hackthesec.co.in/" target="_blank">www.hackthesec.co.in</a><br /><a href="https://www.twitter.com/hackthesecurity" target="_blank">Hack The Sec Twitter</a></span><br /> <br /></div>

How to Install Dovecot to configure POP/IMAP server

Install Dovecot to configure POP/IMAP server. POP uses 110/TCP, IMAP uses 143/TCP. Dovecot is an open-source IMAP and POP3 server for L...

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