Hack The Sec-Leading Resource Of Linux Tutorial: Mail

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<span style="color: red; font-family: PT Serif, serif;"><span style="font-size: 20px; line-height: 26px;"><u><i>Install Postfix to configure SMTP server. SMTP uses 25/TCP</i></u></span></span></h5>
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<span style="color: #333333; font-family: PT Serif, serif;"><span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail, intended as an alternative to the widely used Sendmail MTA.</span></span></h5>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6erBvDea_BmtV8j6nHRCfkyP1HK7xWFm-jBQpRByg78AFExVdUV0TEm-_ECHCjSH1HpwNtZ-tuVkrFZaLhZYGHabCL5H-90tCexaLTrAat0bCFYNwzFN6SJI_CgC__uDysSUzEnaOdyGM/s1600/postfix-mail-server_www.hackthesec.co.in.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6erBvDea_BmtV8j6nHRCfkyP1HK7xWFm-jBQpRByg78AFExVdUV0TEm-_ECHCjSH1HpwNtZ-tuVkrFZaLhZYGHabCL5H-90tCexaLTrAat0bCFYNwzFN6SJI_CgC__uDysSUzEnaOdyGM/s200/postfix-mail-server_www.hackthesec.co.in.png" width="200" /></a><span style="color: #333333; font-family: PT Serif, serif;"><ul style="text-align: left;">
<li><a href="http://www.hackthesec.co.in/2016/02/how-to-install-dovecot-to-configure.html" target="_blank">SMTP-Auth to use Dovecot's SASL function</a></li>
<li><a href="http://www.hackthesec.co.in/2016/02/how-to-install-dovecot-to-configure.html" target="_blank">How to Install Dovecot to configure POP/IMAP server</a></li>
</ul>
<span style="font-size: 16px; font-weight: normal; line-height: 22.4px;">Postfix is installed even if <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS </a>system was installed with [Minimal Install], but if Postfix is not, Install it first like follows.</span></span></h5>
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<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 postfix</span></span></pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtUFqbeQIjF1sMQ24NxFVepEZtUi97GyhdDw5rkJdnjhF2GdWUUl5ZA18_KoVGGvv_b4dN8X3dSOJGnIlPXERtkXRkSjXeiMlc17UuWMGn2CfqyNvQNVgHOiYxC1CJg5BA_ddr1QZ6Nr32/s1600/Postfix_architecture_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="292" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtUFqbeQIjF1sMQ24NxFVepEZtUi97GyhdDw5rkJdnjhF2GdWUUl5ZA18_KoVGGvv_b4dN8X3dSOJGnIlPXERtkXRkSjXeiMlc17UuWMGn2CfqyNvQNVgHOiYxC1CJg5BA_ddr1QZ6Nr32/s640/Postfix_architecture_www.hackthesec.co.in.png" width="640" /></a></div>
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Postfix Configuration.<br /></div>
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<pre style="background-attachment: initial; background-clip: initial; background-color: #363636; background-image: initial; background-origin: initial; background-position: initial; background-repeat: initial; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; 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="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;"><span style="color: white;">[root@mail ~]# </span><span style="color: lime;">vi /etc/postfix/main.cf</span><span style="color: white;">

# line 75: uncomment and specify hostname
myhostname = mail.hackthesec.co.in

# line 83: uncomment and specify domain name
mydomain = </span></span></span><span style="color: white; font-family: Monaco, 'Courier New', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; font-size: medium; line-height: 19px; white-space: pre-wrap;">hackthesec.co.in</span><span style="color: white; 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;">
</span></span><span style="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;"><span style="color: white;">
# line 99: uncomment
</span><span style="color: orange;">myorigin = $mydomain
</span><span style="color: white;">
# line 116: change
inet_interfaces = all

# line 164: add
</span><span style="color: orange;">mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
</span><span style="color: white;">
# line 264: uncomment and specify your local network
mynetworks = 127.0.0.0/8, 10.0.0.0/24

# line 419: uncomment (use Maildir)
home_mailbox = Maildir/

# line 574: add
</span><span style="color: orange;">smtpd_banner = $myhostname ESMTP
</span><span style="color: white;">
# add follows to the end
# limit an email size for 10M
message_size_limit = 10485760
# limit a mailbox for 1G
mailbox_size_limit = 1073741824

# for SMTP-Auth
</span><span style="color: orange;">smtpd_sasl_type = dovecot
</span><span style="color: white;">smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
</span><span style="color: orange;">smtpd_sasl_security_options = noanonymous
</span><span style="color: white;">smtpd_sasl_local_domain = $myhostname
</span><span style="color: orange;">smtpd_recipient_restrictions = permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject</span></span></span></pre>
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[root@mail ~]# systemctl </span><span style="color: lime;">restart postfix</span><span style="color: white;"> 
[root@mail ~]# </span><span style="color: lime;">systemctl </span><span style="color: white;">enable postfix </span></span></span></pre>
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<br /><br /><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></div>
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Install and Configure Postfix to configure SMTP server

Install Postfix to configure SMTP server. SMTP uses 25/TCP Postfix is a free and open-source mail transfer agent (MTA) that routes and d...

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<span style="color: red; font-size: x-large;"><b><u><i>Install & configure Zimbra Open Source Mail Server on CentOS & RHEL</i></u></b></span><br />
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<span style="background-color: white; color: #222222; font-family: "open sans"; font-size: 17px; line-height: 31px;">Zimbra  is a Free Email Server and Calendar & collaboration solution, built for the both  public and private cloud . It is also considered an Exchange replacement. Zimbra provides a web GUI from where mailserver admin can manage zimbra server. Zimbra provides end users with a feature-rich browser-based experience that enables them to seamlessly and securely connect to their emails on any device or platform.</span></div>
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In this tutorial we will install & configure open source zimbra server on CentOS 6.X / RHEL 6.X. Before installating zimbra sever following prerequisite should be completed.</div>
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<span style="color: #0b5394;">1. Create MX record for your domain<br style="box-sizing: border-box;" />2. Create A record for your’s Hostname</span></div>
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In my case domain is “hackthesec.co.in” & Server’s Hostname is “zimbra.hackthesec.co.in”</div>
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<strong style="box-sizing: border-box;">Step:1</strong> Install Necessary  Packages & update hosts file</div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;"><span style="color: #222222;"># # yum -y </span><span style="color: #783f04;">install nc wget nano make nc sudo sysstat</span><span style="color: #222222;"> libtool-ltdl glibc perl ntp</span></pre>
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<span style="color: red;">Edit the file /etc/hosts</span></div>
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<span style="box-sizing: border-box; color: navy;">x.x.x.x zimbra.hackthesec.co.in</span></div>
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<strong style="box-sizing: border-box;">Step:2</strong> Stop Sendmail & postfix service if started & Disabled Selinux</div>
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<strong style="box-sizing: border-box;"></strong></div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; color: #222222; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;"># chkconfig sendmail off ; service sendmail stop ; chkconfig postfix off ; service  postfix stop ;</pre>
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<span style="color: #222222;">Disable selinux  in the file </span><span style="box-sizing: border-box;"><span style="color: red;">/etc/selinux/config</span></span><span style="color: #222222;"> change the selinux= line to </span><span style="box-sizing: border-box;"><span style="color: red;">SELINUX=disabled </span></span></div>
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<span style="color: #0b5394;"><strong style="box-sizing: border-box;">Step:3</strong> Download the Zimbra Server using below command</span></div>
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<span style="color: #0b5394;"><strong style="box-sizing: border-box;"></strong></span></div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; color: #222222; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;"># wget http://files2.zimbra.com/downloads/8.0.4_GA/zcs-8.0.4_GA_5737.RHEL6_64.20130524120036.tgz</pre>
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<span style="color: #0b5394;"><strong style="box-sizing: border-box;"><br /></strong></span></div>
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<span style="color: #0b5394;"><strong style="box-sizing: border-box;">Step:4 </strong>Now extract Zimbra tar file using below command</span></div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;"><span style="color: #222222;"># </span><span style="color: #783f04;">tar -zxpvf </span><span style="color: #222222;">zcs-8.0.4_GA_5737.RHEL6_64.20130524120036.tgz</span></pre>
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<strong style="box-sizing: border-box;"><br /></strong></div>
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<span style="color: #0b5394;"><strong style="box-sizing: border-box;">Step:5 </strong>Now Change the directory & run below command to install zimbra</span></div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;"><span style="color: #222222;"># cd zcs-8.0.4_GA_5737.RHEL6_64.20130524120036 
# </span><span style="color: #20124d;">./install.sh  --platform-override</span></pre>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: 'Open Sans'; font-size: 17px; line-height: 31px; margin-bottom: 26px;">
We are using ‘<strong style="box-sizing: border-box;">–platform-override</strong>‘ option in above command because installation script is only for Redhat  Linux but we are installing on CentOS 6.X machine so to override the Platform condition we are using this option. When we execute the above command we will get below output and follow the instructions :</div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; color: #222222; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;">Operations logged to /tmp/install.log.2570
Checking for existing installation... 
zimbra-ldap...NOT FOUND 
zimbra-logger...NOT FOUND 
zimbra-mta...NOT FOUND 
zimbra-snmp...NOT FOUND 
zimbra-store...NOT FOUND 
zimbra-apache...NOT FOUND 
zimbra-spell...NOT FOUND 
zimbra-convertd...NOT FOUND 
zimbra-memcached...NOT FOUND 
zimbra-proxy...NOT FOUND 
zimbra-archiving...NOT FOUND 
zimbra-cluster...NOT FOUND 
zimbra-core...NOT FOUND

PLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THE SOFTWARE. ZIMBRA, INC..

License Terms for the Zimbra Collaboration Suite: 
http://www.zimbra.com/license/zimbra_public_eula_2.1.html
Do you agree with the terms of the software license agreement? [N] Y
Do you agree with the terms of the software license agreement? [N] Y
License Terms for the Zimbra Collaboration Suite: 
http://www.zimbra.com/license/zimbra_public_eula_2.1.html
Do you agree with the terms of the software license agreement? [N] Y
Do you agree with the terms of the software license agreement? [N] Y

Checking for prerequisites... 
FOUND: NPTL 
FOUND: nc-1.84-22 
FOUND: sudo-1.8.6p3-12 
FOUND: libidn-1.18-2 
FOUND: gmp-4.3.1-7 
FOUND: /usr/lib64/libstdc++.so.6
Checking for suggested prerequisites... 
FOUND: perl-5.10.1 
FOUND: sysstat 
FOUND: sqlite

Prerequisite check complete.
Checking for installable packages
Found zimbra-core
Found zimbra-ldap
Found zimbra-logger
Found zimbra-mta
Found zimbra-snmp
Found zimbra-store
Found zimbra-apache
Found zimbra-spell
Found zimbra-memcached
Found zimbra-proxy

Select the packages to install
Install zimbra-ldap [Y] Y
Install zimbra-logger [Y] Y
Install zimbra-mta [Y] Y
Install zimbra-snmp [Y] Y
Install zimbra-store [Y] Y
Install zimbra-apache [Y] Y
Install zimbra-spell [Y] Y
Install zimbra-memcached [N] Y
Install zimbra-proxy [N] Y
Checking required space for zimbra-core
Checking space for zimbra-store
Installing: 
zimbra-core 
zimbra-ldap 
zimbra-logger 
zimbra-mta 
zimbra-snmp 
zimbra-store 
zimbra-apache 
zimbra-spell 
zimbra-memcached 
zimbra-proxy

The system will be modified.  Continue? [N] Y
Removing /opt/zimbra
Removing zimbra crontab entry...done.
Cleaning up zimbra init scripts...done.
Cleaning up /etc/ld.so.conf...done.
Cleaning up /etc/security/limits.conf...done.
Finished removing Zimbra Collaboration Server.

Installing packages
zimbra-core......zimbra-core-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done 
zimbra-ldap......zimbra-ldap-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-logger......zimbra-logger-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-mta......zimbra-mta-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-snmp......zimbra-snmp-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-store......zimbra-store-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-apache......zimbra-apache-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-spell......zimbra-spell-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-memcached......zimbra-memcached-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
zimbra-proxy......zimbra-proxy-8.0.4_GA_5737.RHEL6_64-20130524120036.x86_64.rpm...done
Operations logged to /tmp/zmsetup.12152013-081656.log
Installing LDAP configuration database...done.

Setting defaults...
DNS ERROR resolving MX for zimbra.hackthesec.co.in
It is suggested that the domain name have an MX record configured in DNS
Change domain name? [Yes] Yes
Create domain: [zimbra.hackthesec.co.in] hackthesec.co.in.com                                            
MX: zimbra.hackthesec.co.in (162.13.151.48) 
Interface: 162.13.151.48
Interface: 2a00:1a48:7807:102:c7d4:45f6:ff08:2209
Interface: 10.181.72.68
Interface: 127.0.0.1
Interface: ::1
done.</pre>
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<strong style="box-sizing: border-box;">Step:6</strong> Next you will come to the Main Menu which will show your configuration. Select #3 then change the Admin Password under option #4 next hit r to go back.</div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; color: #222222; font-family: monospace, monospace; font-size: 17px; line-height: 31px; margin-top: 24px; overflow: auto; padding: 4px 10px;">*** CONFIGURATION COMPLETE - press 'a' to apply
Select from menu, or press 'a' to apply config (? - help) a
Save configuration data to a file? [Yes] Yes
Save config in file: [/opt/zimbra/config.10975] 
Saving config in /opt/zimbra/config.10975...done.
The system will be modified - continue? [No] Yes
Operations logged to /tmp/zmsetup.12152013-081656.log
Setting local config values...</pre>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: 'Open Sans'; font-size: 17px; line-height: 31px; margin-bottom: 26px;">
When Configuration complete – press return to exit. Now the zimbra installation is completed.</div>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: 'Open Sans'; font-size: 17px; line-height: 31px; margin-bottom: 26px;">
<strong style="box-sizing: border-box;">Step:7 </strong>Access web administration console</div>
<div style="background-color: white; box-sizing: border-box; color: #222222; font-family: 'Open Sans'; font-size: 17px; line-height: 31px; margin-bottom: 26px;">
Use the URL ‘<span style="box-sizing: border-box; color: navy;">https://<Server’s HostName>:7071′</span></div>
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In my case URL is “https://zimbra.hackthesec.co.in:7071”</div>
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Use the User Name as admin and Password that we have set while installation in the above steps.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1Z6KUHaYWeXQFyG6YvYFqoR8TxIHBXyznC-xYB21cPSbtkm__Vqpt3gI6xqm46NomSYAgE0wLCg79B7b_im0isFjOOqVbgYtSh_MIeg3s-uciNeHe4tfhQ5-rQyFdS_Zo0E0mBkF_XtUx/s1600/zimbra-admin-console_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1Z6KUHaYWeXQFyG6YvYFqoR8TxIHBXyznC-xYB21cPSbtkm__Vqpt3gI6xqm46NomSYAgE0wLCg79B7b_im0isFjOOqVbgYtSh_MIeg3s-uciNeHe4tfhQ5-rQyFdS_Zo0E0mBkF_XtUx/s1600/zimbra-admin-console_www.hackthesec.co.in.jpg" /></a></div>
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<strong style="box-sizing: border-box;">Note</strong> : Use zmcontrol Command to  stop, start & to check Status of zimbra Server</div>
<pre style="background-color: #f1f1f1; border-radius: 0px; border: none; box-sizing: border-box; font-family: monospace, monospace; margin-top: 24px; overflow: auto; padding: 4px 10px;">[root@zimbra ~]# su - zimbra 
[zimbra@zimbra ~]$ zmcontrol status
[zimbra@zimbra ~]$ zmcontrol stop
[zimbra@zimbra ~]$ zmcontrol start</pre>
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