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We're working on migrating [old wiki documents](http://www.iredmail.org/wiki) to Markdown format for easier maintenance, you can find converted documents [here](https://bitbucket.org/zhb/docs.iredmail.org/src).
# Install iRedMail
* [Install iRedMail on Red Hat Enterprise Linux, CentOS](https://bitbucket.org/zhb/docs.iredmail.org/src/default/installation/install.iredmail.on.rhel.md)
* [Setup DNS records for your mail server](https://bitbucket.org/zhb/docs.iredmail.org/src/default/installation/setup_dns.md)
* [Perform silent/unattended iRedMail installation](https://bitbucket.org/zhb/docs.iredmail.org/src/default/installation/unattended.iredmail.installation.md)
# How to
* [Change mail attachment size](https://bitbucket.org/zhb/docs.iredmail.org/src/default/howto/0-change.mail.attachment.size.md)

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# installation guides
* http://www.iredmail.org/install_iredmail_on_rhel.html
* https://code.google.com/p/iredmail/wiki/DNS_DKIM
* https://code.google.com/p/iredmail/wiki/DNS_SPF
* http://www.iredmail.org/install_iredmail_on_debian.html
* http://www.iredmail.org/install_iredmail_on_ubuntu.html
* http://www.iredmail.org/install_iredmail_on_freebsd.html
* http://www.iredmail.org/wiki/index.php?title=Install/iRedMail/FreeBSD.Jail
* http://www.iredmail.org/install_iredmail_on_openbsd.html
* https://code.google.com/p/iredmail/wiki/DNS_DKIM
* https://code.google.com/p/iredmail/wiki/DNS_SPF
* ~~ http://www.iredmail.org/install_iredmail_on_rhel.html ~~
# integrations

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</div><p>We're working on migrating <a href="http://www.iredmail.org/wiki">old wiki documents</a> to Markdown format for easier maintenance, you can find converted documents <a href="https://bitbucket.org/zhb/docs.iredmail.org/src">here</a>.</p>
<h3 id="install-iredmail">Install iRedMail</h3>
<ul>
<li><a href="install.iredmail.on.rhel.html">Install iRedMail on Red Hat Enterprise Linux, CentOS</a></li>
<li><a href="setup_dns.html">Setup DNS records for your mail server</a></li>
<li><a href="unattended.iredmail.installation.html">Perform silent/unattended iRedMail installation</a></li>
</ul>
<h3 id="how-to">How to</h3>

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Install iRedMail on Red Hat Enterprise Linux, CentOS</title>
<link href="./css/markdown.css" rel="stylesheet"></head>
</head>
<body>
<div id="navigation">
<a href="http://www.iredmail.org" target="_blank">iRedMail web site</a>
// <a href="./index.html">Document Index</a>
</div><h1 id="install-iredmail-on-red-hat-enterprise-linux-centos">Install iRedMail on Red Hat Enterprise Linux, CentOS</h1>
<div class="toc">
<ul>
<li><a href="#install-iredmail-on-red-hat-enterprise-linux-centos">Install iRedMail on Red Hat Enterprise Linux, CentOS</a><ul>
<li><a href="#system-requirements">System Requirements</a></li>
<li><a href="#preparations">Preparations</a><ul>
<li><a href="#set-a-fully-qualified-domain-name-fqdn-hostname-on-your-server">Set a fully qualified domain name (FQDN) hostname on your server</a></li>
<li><a href="#disable-selinux">Disable SELinux.</a></li>
<li><a href="#enable-yum-repositories-for-installing-new-packages">Enable yum repositories for installing new packages</a></li>
<li><a href="#download-the-latest-release-of-iredmail">Download the latest release of iRedMail</a></li>
</ul>
</li>
<li><a href="#start-iredmail-installer">Start iRedMail installer</a></li>
<li><a href="#screenshots-of-installation">Screenshots of installation:</a></li>
<li><a href="#important-things-you-must-know-after-installation">Important things you MUST know after installation</a></li>
<li><a href="#access-webmail-and-other-web-applications">Access webmail and other web applications</a></li>
<li><a href="#get-technical-support">Get technical support</a></li>
<li><a href="#notes-about-binary-packages-provided-by-iredmail-project">Notes about binary packages provided by iRedMail project</a></li>
</ul>
</li>
</ul>
</div>
<h2 id="system-requirements">System Requirements</h2>
<blockquote>
<p><strong>WARNING</strong>: iRedMail is designed to be deployed on a FRESH server system,
which means your server does <strong>NOT</strong> have mail related components installed,
e.g. MySQL, OpenLDAP, Postfix, Dovecot, Amavisd, etc. iRedMail will install
and configure them for you automatically. Otherwise it may override your
existing files/configurations althought it will backup files before modifing,
and it may be not working as expected.</p>
</blockquote>
<p>To install iRedMail, you need:</p>
<ul>
<li>
<p>A FRESH, working RHEL or CentOS system. Supported releases are listed on
<a href="http://www.iredmail.org/download.html">Download</a> page.</p>
</li>
<li>
<p>At least <code>1 GB</code> of memory is required for low traffic production server.
Spam/Virus scanning will take most system resource.</p>
</li>
</ul>
<h2 id="preparations">Preparations</h2>
<h3 id="set-a-fully-qualified-domain-name-fqdn-hostname-on-your-server">Set a fully qualified domain name (FQDN) hostname on your server</h3>
<p>No matter your server is a testing machine or production server, we strongly
recommended you to set a fully qualified domain name (FQDN) hostname.</p>
<p>Enter command <code>hostname -f</code> to view the current hostname:</p>
<pre><code class="shell">$ hostname -f
mx.example.com
</code></pre>
<p>On RHEL/CentOS/Scientific Linux, hostname is set in two files:</p>
<ul>
<li>For RHEL/CentOS/Scientific Linux 6, hostname is defined in /etc/sysconfig/network.</li>
</ul>
<pre><code>HOSTNAME=mx.example.com
</code></pre>
<p>For RHEL/CentOS/Scientific Linux 7, hostname is defined in /etc/hostname.</p>
<pre><code>mx.example.com
</code></pre>
<ul>
<li>/etc/hosts: hostname &lt;=&gt; IP address mapping. Warning: List the FQDN hostname as first item.</li>
</ul>
<pre><code>127.0.0.1 mx.example.com demo localhost localhost.localdomain
</code></pre>
<p>Verify the FQDN hostname. If it wasn't changed, please reboot server to make it work.</p>
<pre><code>$ hostname -f
mx.example.com
</code></pre>
<h3 id="disable-selinux">Disable SELinux.</h3>
<p>iRedMail doesn't work with SELinux, so please disable it by setting below
value in its config file <code>/etc/selinux/config</code>.</p>
<pre><code>SELINUX=disabled
</code></pre>
<p>Now disable it immediately without rebooting your server.</p>
<pre><code># setenforce 0
</code></pre>
<h3 id="enable-yum-repositories-for-installing-new-packages">Enable yum repositories for installing new packages</h3>
<ul>
<li>
<p>For CentOS or Scientific Linux, please enable CentOS/Scientific official
yum repositories, and <strong>DISABLE</strong> all third-party yum repositories to
avoid package conflict.</p>
</li>
<li>
<p>For Red Hat Enterprise Linux, please enable Red Hat Network to install
packages, or create a local yum repository with DVD/CD ISO images.</p>
</li>
</ul>
<h3 id="download-the-latest-release-of-iredmail">Download the latest release of iRedMail</h3>
<ul>
<li>
<p>Visit <a href="http://www.iredmail.org/download.html">Download page</a> to get the
latest stable release of iRedMail.</p>
</li>
<li>
<p>Upload iRedMail to your mail server via ftp or scp or whatever method you
can use, login to the server to install iRedMail. We assume you uploaded
it to <code>/root/iRedMail-x.y.z.tar.bz2</code> (replace x.y.z by the real version number).</p>
</li>
<li>
<p>Uncompress iRedMail tarball:</p>
</li>
</ul>
<pre><code># cd /root/
# tar xjf iRedMail-x.y.z.tar.bz2
</code></pre>
<h2 id="start-iredmail-installer">Start iRedMail installer</h2>
<p>It's now ready to start iRedMail installer, it will ask you several simple
questions, that's all steps to setup a full-featured mail server.</p>
<blockquote>
<p>For Chinese users: Our domain name "iredmail.org" is blocked in China mainland since Jun 04, 2011, please replace all 'iredmail.org' by its IP address "106.187.51.47" (without quotes) in /root/iRedMail-x.y.z/pkgs/get_all.sh BEFORE executing "iRedMail.sh". This is a Linode VPS hosted on Tokyo, Japan.</p>
</blockquote>
<pre><code># cd /root/iRedMail-x.y.z/
# bash iRedMail.sh
</code></pre>
<h2 id="screenshots-of-installation">Screenshots of installation:</h2>
<ol>
<li>Welcome and thanks for your use</li>
</ol>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/welcome.png" /></p>
<ol>
<li>Specify location to store all mailboxes. Default is <code>/var/vmail/</code>.</li>
</ol>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/location_to_store_mailboxes.png" /></p>
<ol>
<li>Choose backend used to store mail accounts. You can manage mail accounts
with iRedAdmin, our web-based iRedMail admin panel.</li>
</ol>
<p><strong>IMPORTANT NOTE</strong>: There's no big difference between available backends, so
it's strongly recommended to choose the one you're familiar with for easier
management and maintenance after installation.</p>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/backend.png" /></p>
<ol>
<li>If you choose to store mail accounts in OpenLDAP, iRedMail installer will
ask you two questions about OpenLDAP.</li>
</ol>
<p>4.1. LDAP suffix.</p>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/ldap_suffix.png" /></p>
<p>4.2. Password of LDAP root dn.</p>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/pw_of_ldap_root_dn.png" /></p>
<ol>
<li>Set password of MySQL or PostgreSQL admin user.</li>
</ol>
<p><strong>NOTE</strong>: MySQL is used to store data of other applications (e.g. Roundcube
webmail, Cluebringer, Amavisd-new) if you choose OpenLDAP or MySQL as backend.</p>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/pw_of_mysql_root_user.png" /></p>
<ol>
<li>Add your first mail domain name</li>
</ol>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/first_mail_domain.png" /></p>
<ol>
<li>Set password of admin account of your first mail domain.</li>
</ol>
<p><strong>Note</strong>: This account is an admin account and a mail user. That means you can
login to webmail and admin panel (iRedAdmin) with this account, login username
is full email address.</p>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/pw_of_domain_admin.png" /></p>
<ol>
<li>Choose optional components</li>
</ol>
<p><img alt="" src="http://www.iredmail.org/images/installation/iredmail/optional_components.png" /></p>
<p>After answered above questions, iRedMail installer will ask your confirm to
start installation. It will install and configure required packages
automatically. Type <code>y</code> or <code>Y</code> and press <code>Enter</code> to start.</p>
<pre><code>Configuration completed.
*************************************************************************
**************************** WARNING ***********************************
*************************************************************************
* *
* Please do remember to *REMOVE* configuration file after installation *
* completed successfully. *
* *
* * /root/iRedMail-x.y.z/config
* *
*************************************************************************
&lt;&lt;&lt; iRedMail &gt;&gt;&gt; Continue? [Y|n] # &lt;- Type 'Y' or 'y' here, and press 'Enter' to continue
</code></pre>
<h2 id="important-things-you-must-know-after-installation">Important things you <strong>MUST</strong> know after installation</h2>
<ul>
<li>
<p>Read file <code>/root/iRedMail-x.y.z/iRedMail.tips</code> first, it contains:</p>
<ul>
<li>URLs, usernames and passwords of web-based applications</li>
<li>Location of mail serve related software configuration files</li>
<li>Some other important and sensitive information</li>
</ul>
</li>
<li>
<p><a href="./setup_dns.html">Setup DNS records for your mail server</a></p>
</li>
</ul>
<h2 id="access-webmail-and-other-web-applications">Access webmail and other web applications</h2>
<p>After installation successfully completed, you can access web-based programs
if you choose to install them. Replace <code>your_server</code> below by your real server
hostname or IP address.</p>
<ul>
<li><strong>Roundcube webmail</strong>: <a href="https://your_server/mail/">https://your_server/mail/</a></li>
<li><strong>Web admin panel (iRedAdmin)</strong>: <a href="httpS://your_server/iredadmin/">httpS://your_server/iredadmin/</a></li>
<li><strong>phpLDAPadmin</strong> (available if you choose LDAP backend): <a href="httpS://your_server/phpldapadmin/">httpS://your_server/phpldapadmin/</a></li>
<li><strong>Awstats</strong>: <a href="httpS://your_server/awstats/awstats.pl?config=web">httpS://your_server/awstats/awstats.pl?config=web</a> (or ?config=smtp)</li>
</ul>
<h2 id="get-technical-support">Get technical support</h2>
<p>Please post all issues, feedbacks, feature requests, suggestions in our <a href="http://www.iredmail.org/forum/">online
support forum</a>, it's more responsible than you
expected.</p>
<h2 id="notes-about-binary-packages-provided-by-iredmail-project">Notes about binary packages provided by iRedMail project</h2>
<p>Most binary packages in iRedMail yum repository comes from below repositories,
packages with <code>-ired</code> flag were packed by iRedMail project.</p>
<ul>
<li><a href="http://packages.sw.be/">Dag Wieers</a></li>
<li><a href="http://download.fedora.redhat.com/pub/epel/">EPEL</a></li>
<li><a href="http://atrpms.net/">ATrpms</a></li>
</ul><br /><p>If you found something wrong in this document, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.</p></body></html>

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Setup DNS records for your mail server</title>
<link href="./css/markdown.css" rel="stylesheet"></head>
</head>
<body>
<div id="navigation">
<a href="http://www.iredmail.org" target="_blank">iRedMail web site</a>
// <a href="./index.html">Document Index</a>
</div><h1 id="setup-dns-records-for-your-mail-server">Setup DNS records for your mail server</h1>
<p><strong>WORK IN PROGRESS</strong></p>
<h2 id="setup-a-record-for-server-hostname">setup A record for server hostname</h2>
<h2 id="setup-reverse-dns-for-server-ip-address">setup reverse dns for server IP address</h2>
<h2 id="setup-mx-record-for-mail-domain">setup MX record for mail domain</h2>
<h2 id="setup-spf-record">setup SPF record</h2>
<h2 id="setup-dns-record">setup DNS record</h2><br /><p>If you found something wrong in this document, please do <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.</p></body></html>

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# Install iRedMail on Red Hat Enterprise Linux, CentOS
[TOC]
## System Requirements
> __WARNING__: iRedMail is designed to be deployed on a FRESH server system,
> which means your server does __NOT__ have mail related components installed,
> e.g. MySQL, OpenLDAP, Postfix, Dovecot, Amavisd, etc. iRedMail will install
> and configure them for you automatically. Otherwise it may override your
> existing files/configurations althought it will backup files before modifing,
> and it may be not working as expected.
To install iRedMail, you need:
* A FRESH, working RHEL or CentOS system. Supported releases are listed on
[Download](http://www.iredmail.org/download.html) page.
* At least `1 GB` of memory is required for low traffic production server.
Spam/Virus scanning will take most system resource.
## Preparations
### Set a fully qualified domain name (FQDN) hostname on your server
No matter your server is a testing machine or production server, we strongly
recommended you to set a fully qualified domain name (FQDN) hostname.
Enter command `hostname -f` to view the current hostname:
```shell
$ hostname -f
mx.example.com
```
On RHEL/CentOS/Scientific Linux, hostname is set in two files:
* For RHEL/CentOS/Scientific Linux 6, hostname is defined in /etc/sysconfig/network.
```
HOSTNAME=mx.example.com
```
For RHEL/CentOS/Scientific Linux 7, hostname is defined in /etc/hostname.
```
mx.example.com
```
* /etc/hosts: hostname <=> IP address mapping. Warning: List the FQDN hostname as first item.
```
127.0.0.1 mx.example.com demo localhost localhost.localdomain
```
Verify the FQDN hostname. If it wasn't changed, please reboot server to make it work.
```
$ hostname -f
mx.example.com
```
### Disable SELinux.
iRedMail doesn't work with SELinux, so please disable it by setting below
value in its config file `/etc/selinux/config`.
```
SELINUX=disabled
```
Now disable it immediately without rebooting your server.
```
# setenforce 0
```
### Enable yum repositories for installing new packages
* For CentOS or Scientific Linux, please enable CentOS/Scientific official
yum repositories, and __DISABLE__ all third-party yum repositories to
avoid package conflict.
* For Red Hat Enterprise Linux, please enable Red Hat Network to install
packages, or create a local yum repository with DVD/CD ISO images.
### Download the latest release of iRedMail
* Visit [Download page](http://www.iredmail.org/download.html) to get the
latest stable release of iRedMail.
* Upload iRedMail to your mail server via ftp or scp or whatever method you
can use, login to the server to install iRedMail. We assume you uploaded
it to `/root/iRedMail-x.y.z.tar.bz2` (replace x.y.z by the real version number).
* Uncompress iRedMail tarball:
```
# cd /root/
# tar xjf iRedMail-x.y.z.tar.bz2
```
## Start iRedMail installer
It's now ready to start iRedMail installer, it will ask you several simple
questions, that's all steps to setup a full-featured mail server.
> For Chinese users: Our domain name "iredmail.org" is blocked in China mainland since Jun 04, 2011, please replace all 'iredmail.org' by its IP address "106.187.51.47" (without quotes) in /root/iRedMail-x.y.z/pkgs/get_all.sh BEFORE executing "iRedMail.sh". This is a Linode VPS hosted on Tokyo, Japan.
```
# cd /root/iRedMail-x.y.z/
# bash iRedMail.sh
```
## Screenshots of installation:
1. Welcome and thanks for your use
![](http://www.iredmail.org/images/installation/iredmail/welcome.png)
2. Specify location to store all mailboxes. Default is `/var/vmail/`.
![](http://www.iredmail.org/images/installation/iredmail/location_to_store_mailboxes.png)
3. Choose backend used to store mail accounts. You can manage mail accounts
with iRedAdmin, our web-based iRedMail admin panel.
__IMPORTANT NOTE__: There's no big difference between available backends, so
it's strongly recommended to choose the one you're familiar with for easier
management and maintenance after installation.
![](http://www.iredmail.org/images/installation/iredmail/backend.png)
4. If you choose to store mail accounts in OpenLDAP, iRedMail installer will
ask you two questions about OpenLDAP.
4.1. LDAP suffix.
![](http://www.iredmail.org/images/installation/iredmail/ldap_suffix.png)
4.2. Password of LDAP root dn.
![](http://www.iredmail.org/images/installation/iredmail/pw_of_ldap_root_dn.png)
5. Set password of MySQL or PostgreSQL admin user.
__NOTE__: MySQL is used to store data of other applications (e.g. Roundcube
webmail, Cluebringer, Amavisd-new) if you choose OpenLDAP or MySQL as backend.
![](http://www.iredmail.org/images/installation/iredmail/pw_of_mysql_root_user.png)
6. Add your first mail domain name
![](http://www.iredmail.org/images/installation/iredmail/first_mail_domain.png)
7. Set password of admin account of your first mail domain.
__Note__: This account is an admin account and a mail user. That means you can
login to webmail and admin panel (iRedAdmin) with this account, login username
is full email address.
![](http://www.iredmail.org/images/installation/iredmail/pw_of_domain_admin.png)
8. Choose optional components
![](http://www.iredmail.org/images/installation/iredmail/optional_components.png)
After answered above questions, iRedMail installer will ask your confirm to
start installation. It will install and configure required packages
automatically. Type `y` or `Y` and press `Enter` to start.
```
Configuration completed.
*************************************************************************
**************************** WARNING ***********************************
*************************************************************************
* *
* Please do remember to *REMOVE* configuration file after installation *
* completed successfully. *
* *
* * /root/iRedMail-x.y.z/config
* *
*************************************************************************
<<< iRedMail >>> Continue? [Y|n] # <- Type 'Y' or 'y' here, and press 'Enter' to continue
```
## Important things you __MUST__ know after installation
* Read file `/root/iRedMail-x.y.z/iRedMail.tips` first, it contains:
* URLs, usernames and passwords of web-based applications
* Location of mail serve related software configuration files
* Some other important and sensitive information
* [Setup DNS records for your mail server](./setup_dns.html)
## Access webmail and other web applications
After installation successfully completed, you can access web-based programs
if you choose to install them. Replace `your_server` below by your real server
hostname or IP address.
* __Roundcube webmail__: [https://your_server/mail/](https://your_server/mail/)
* __Web admin panel (iRedAdmin)__: [httpS://your_server/iredadmin/](httpS://your_server/iredadmin/)
* __phpLDAPadmin__ (available if you choose LDAP backend): [httpS://your_server/phpldapadmin/](httpS://your_server/phpldapadmin/)
* __Awstats__: [httpS://your_server/awstats/awstats.pl?config=web](httpS://your_server/awstats/awstats.pl?config=web) (or ?config=smtp)
## Get technical support
Please post all issues, feedbacks, feature requests, suggestions in our [online
support forum](http://www.iredmail.org/forum/), it's more responsible than you
expected.
## Notes about binary packages provided by iRedMail project
Most binary packages in iRedMail yum repository comes from below repositories,
packages with `-ired` flag were packed by iRedMail project.
* [Dag Wieers](http://packages.sw.be/)
* [EPEL](http://download.fedora.redhat.com/pub/epel/)
* [ATrpms](http://atrpms.net/)

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# Setup DNS records for your mail server
__WORK IN PROGRESS__
## setup A record for server hostname
## setup reverse dns for server IP address
## setup MX record for mail domain
## setup SPF record
## setup DNS record