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Install iRedMail on Debian or Ubuntu Linux

System Requirements


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 modifying, and it may not be working as expected.

To install iRedMail on Debian or Ubuntu Linux, you need:



Set a fully qualified domain name (FQDN) hostname on your server

No matter your server is a testing machine or production server, it's strongly recommended to set a fully qualified domain name (FQDN) hostname.

Enter command hostname -f to view the current hostname:

$ hostname -f

On Debian/Ubuntu Linux, hostname is set in two files: /etc/hostname and /etc/hosts.

# Part of file: /etc/hosts mx localhost localhost.localdomain

Verify the FQDN hostname. If it wasn't changed after updating above two files, please reboot server to make it work.

$ hostname -f

Enable default official Debian/Ubuntu apt repositories

# sudo apt-get install bzip2

Download the latest release of iRedMail

# 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 required to setup a full-featured mail server.

# cd /root/iRedMail-x.y.z/
# bash

Note to Chinese users

Our domain name has been blocked in mainland China for years (since Jun 04, 2011), please run command below to finish the installation:


Screenshots of installation:


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.

To MySQL/MariaDB/PostgreSQL users

If you choose to store mail accounts in MySQL/MariaDB/PostgreSQL, iRedMail installer will generate a random, strong password for you. You can find it in file

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.

After answered above questions, iRedMail installer will ask you to review and confirm to start installation. It will install and configure required packages automatically. Type y or Y and press Enter to start.

Important things you MUST know after installation


The weakest part of a mail server is user's weak password. Spammers don't want to hack your server, they just want to send spam from your server. Please ALWAYS ALWAYS ALWAYS force users to use a strong password.

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.

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