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< title > Install iRedMail on Red Hat Enterprise Linux, CentOS< / title >
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< 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 >
< / ul >
< / li >
< / ul >
< / div >
< h2 id = "system-requirements" > System Requirements< / h2 >
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< p > < strong > IMPORTANT WARNING< / strong > : iRedMail is designed to be deployed on a FRESH server system,
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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,
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and it may not be working as expected.< / p >
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< p > To install iRedMail on RHEL or CentOS Linux, you need:< / p >
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< ul >
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< li > A < strong > FRESH< / strong > , working RHEL or CentOS system. Supported releases are listed on
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< a href = "../download.html" > Download< / a > page.< / li >
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< li > < code > 2 GB< / code > of memory is recommended for a low traffic production server.
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Spam/Virus scanning will take most system resource.< / li >
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< / 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 >
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< p > No matter your server is a testing machine or production server, it's strongly
recommended to set a fully qualified domain name (FQDN) hostname.< / p >
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< 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 >
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< li > For RHEL/CentOS/Scientific Linux 6, hostname is defined in < code > /etc/sysconfig/network< / code > :< / li >
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< / 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 >
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< li > < code > /etc/hosts< / code > : hostname < => IP address mapping. Warning: List the FQDN hostname as first item.< / li >
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< / ul >
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< pre > < code > 127.0.0.1 mx.example.com mx localhost localhost.localdomain
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< / 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
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value in its config file < code > /etc/selinux/config< / code > . After server reboot, SELinux
will be completely disabled.< / p >
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< pre > < code > SELINUX=disabled
< / code > < / pre >
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< p > If you prefer to let SELinux prints warnings instead of enforcing, you can
set below value instead:< / p >
< pre > < code > SELINUX=permissive
< / code > < / pre >
< p > Disable it immediately without rebooting your server.< / p >
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< 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 >
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< blockquote >
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< p > < strong > NOTE< / strong > : Since official RHEL/CentOS and EPEL repositories don't have all
required packages with the needed features, iRedMail team has built these
packages and made them available trough the iRedMail repository enabled by
default at installation time. You can view all available packages
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< a href = "http://www.iredmail.org/yum/rpms/" > here< / a > , please check < code > README< / code > and
< code > ChangeLog< / code > files under each directory for more details. Source RPMs (srpm)
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used by iRedMail team to build the binary packages are available
< a href = "http://www.iredmail.org/yum/srpms/" > here< / a > .< / p >
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< / blockquote >
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< h3 id = "download-the-latest-release-of-iredmail" > Download the latest release of iRedMail< / h3 >
< ul >
< li >
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< p > Visit < a href = "../download.html" > Download page< / a > to get the
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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 >
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< p > It's now ready to start iRedMail installer, it will ask you several simple
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questions, that's all required to setup a full-featured mail server.< / p >
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< blockquote >
< p > For Chinese users: Our domain name < code > iredmail.org< / code > is blocked in mainland
China since Jun 04, 2011, please run below command with a nearest mirror
site. For example: < code > IREDMAIL_MIRROR='http://42.159.241.31' bash iRedMail.sh< / code > .< / p >
< ul >
< li > < code > http://42.159.241.31< / code > is a mirror in mainland China. recommended.< / li >
< li > < code > http://106.187.51.47< / code > is a Linode VPS hosted in Tokyo, Japan.< / li >
< / ul >
< / blockquote >
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< pre > < code > # cd /root/iRedMail-x.y.z/
# bash iRedMail.sh
< / code > < / pre >
< h2 id = "screenshots-of-installation" > Screenshots of installation:< / h2 >
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< ul >
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< li > Welcome and thanks for your use< / li >
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< / ul >
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< p > < img alt = "" src = "../images/installation/iredmail/welcome.png" / > < / p >
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< ul >
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< li > Specify location to store all mailboxes. Default is < code > /var/vmail/< / code > .< / li >
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< / ul >
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< p > < img alt = "" src = "../images/installation/iredmail/location_to_store_mailboxes.png" / > < / p >
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< ul >
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< li > Choose backend used to store mail accounts. You can manage mail accounts
with iRedAdmin, our web-based iRedMail admin panel.< / li >
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< / ul >
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< 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 >
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< p > < img alt = "" src = "../images/installation/iredmail/backend.png" / > < / p >
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< ul >
< li >
< p > If you choose to store mail accounts in OpenLDAP, iRedMail installer will
ask you two questions about OpenLDAP.< / p >
< ul >
< li > LDAP suffix.< / li >
< / ul >
< / li >
< / ul >
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< p > < img alt = "" src = "../images/installation/iredmail/ldap_suffix.png" / > < / p >
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< pre > < code > * Password of LDAP root dn.
< / code > < / pre >
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< p > < img alt = "" src = "../images/installation/iredmail/pw_of_ldap_root_dn.png" / > < / p >
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< ul >
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< li > Set password of MySQL or PostgreSQL admin user.< / li >
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< / ul >
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< 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 >
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< p > < img alt = "" src = "../images/installation/iredmail/pw_of_mysql_root_user.png" / > < / p >
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< ul >
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< li > Add your first mail domain name< / li >
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< / ul >
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< p > < img alt = "" src = "../images/installation/iredmail/first_mail_domain.png" / > < / p >
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< ul >
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< li > Set password of admin account of your first mail domain.< / li >
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< / ul >
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< 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 >
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< p > < img alt = "" src = "../images/installation/iredmail/pw_of_domain_admin.png" / > < / p >
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< ul >
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< li > Choose optional components< / li >
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< / ul >
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< p > < img alt = "" src = "../images/installation/iredmail/optional_components.png" / > < / p >
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< 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
* *
*************************************************************************
< < < iRedMail > > > Continue? [Y|n] # < - 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 >
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< blockquote >
< p > The weakest part of a mail server is user's weak password. Spammers don't
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want to hack your server, they just want to send spam from your server.
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Please < strong > ALWAYS ALWAYS ALWAYS< / strong > force users to use a strong password.< / p >
< / blockquote >
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< 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 >
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< li > Location of mail service related software configuration files. You can
also check this tutorial instead:
< a href = "./file.locations.html" > Locations of configuration and log files of mojor components< / a > .< / li >
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< li > Some other important and sensitive information< / li >
< / ul >
< / li >
< li >
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< p > < a href = "./setup.dns.html" > Setup DNS records for your mail server< / a > < / p >
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< / li >
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< li > < a href = "./index.html#configure-mail-client-applications" > How to configure your mail clients< / a > < / li >
< li > It's highly recommended to purchase a SSL cert to avoid annonying warning
message in web browser or mail clients when accessing mailbox via
HTTPS/IMAPS/POP3/SMTPS. Or, you can use
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< a href = "http://www.startssl.com/?app=1" > free SSL cert offerred by StartSSL.com< / a > .
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We have a document for you to
< a href = "http://www.iredmail.org/docs/use.a.bought.ssl.certificate.html" > use a bought SSL certificate< / a > .< / li >
< li > If you need to bulk create mail users, check our document for
< a href = "./ldap.bulk.create.mail.users.html" > OpenLDAP< / a > and
< a href = "./sql.bulk.create.mail.users.html" > MySQL/MariaDB/PostgreSQL< / a > .< / li >
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< li > If you're running a busy mail server, we have < a href = "./performance.tuning.html" > some suggestions for better
performance< / a > .< / li >
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< / 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 > 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
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expected.< / p > < p style = "text-align: center; color: grey;" > Document published under a < a href = "http://creativecommons.org/licenses/by-nd/3.0/us/" target = "_blank" > CC BY-ND 3.0< / a > license. If you found something wrong, please do < a href = "http://www.iredmail.org/contact.html" > contact us< / a > to fix it.< script >
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