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

iRedMail is out of the box open source mail server solution on Linux like operating system. The beauty of iRedMail is that it provides web based admin panel from where mail admin or system admins can do all email related operations task. Some of other features are listed below :

  • Support unlimited email accounts.
  • It provides Roundcube as webmail (MUA )
  • It used Postfix as MTA & Dovecot as MDA
  • It pvoides Calendar service via CalDAV & Contact service via CardDAV
  • It uses SpamAssassin for Spam scan and Amavis & Clamav for Mail virus scan.
  • OpenLDAP, MariaDB and PostgreSQL can be used to save mail accounts

In this article we will demonstrate how to install and configure iRedMail on CentOS 7 & RHEL 7. I am going to use followings for iRedMail setup.

  • OS = CentOS 7 or RHEL 7
  • Domain =
  • Server Hostname =

Note : 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.

Step:1 Set hostname and disable Selinux.

Set the proper hostname using hostnamectl command if it is not set.

[root@mail ~]# hostnamectl set-hostname
[root@mail ~]# hostname -f
[root@mail ~]#

Update the /etc/hosts file localhost.localdomain localhost

Disable Selinux

[root@mail ~]# setenforce 0

Edit the file /etc/sysconfig/selinux , set the parameter “SELINUX=disabled” , Reboot the server to disable selinux completely.

Step:2 Download the tar file of iRedmail.

Download the latest version of iRedmail from their Official Web Site or use below wget command to download from terminal.

[root@mail ~]# wget

Step:3 Extract the tar file & execute installation Script.

[root@mail ~]# ll
total 124
-rw-r--r-- 1 root root 126277 Dec 20 19:12 iRedMail-0.9.3.tar.bz2
[root@mail ~]#
[root@mail ~]# tar -jxvf iRedMail-0.9.3.tar.bz2
[root@mail ~]# cd iRedMail-0.9.3
[root@mail iRedMail-0.9.3]# sh

After couple of seconds , below screen will appear , Select yes and press enter.


Define the folder or directory where users mailbox will be stored.


Select the web Server for iRedmail. Default is Nginx.


Select the database of your choice which will store domain names and mail accounts. In my case i am using MariaDB.


Define the domain name for your mail server. In my case domain name is “


Set Password for postmaster account.


Select Optional Components of iRedmail installation


Press “y” to continue installation, Mail Server info & Credentials are kept in the file “/root/iRedMail-0.9.3/config”. Please keep this file in secure place.



As per instructions , reboot the server to enable all mail services.

Postfix mail logs and iRedmail logs are stored in “/var/log/maillog” and “/var/log/iredapd/iredapd.log” respectively.

Note : Default administrator name is “[email protected]

Following are the Important URLs after the Installation is completed , replace the domain name as per your setup in mentioned URLs.

iRedAdmin – official web-based admin panel:

Username: [email protected], password: XXXXXXXXXX

Roundcube webmail URL :

SOGo Groupware

Step:4 Create Users & domain from Admin Panel.

To create users first login to admin panel. Use user name as “postmaster@<domain>” and password that we set during installation.



Click on Add option and then Select Users.


Add a new Domain :

From the admin Panel , Select “Domain & accounts” option and then click on Add domain


Define the domain name & Organization Name and then further we can create users on newly created domain.


Step:5 Access Roundcube (Webmail).

Open the url in the browser “” , replace the domain name as per your setup.



Send a test mail to verify the functionality.


mail-from iredmail-on-gmail

As we see that i got the mail from iRedmail mail server, so we can say the iRedmail is successfully installed and configured.

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I am a Cloud Consultant with over 15 years of experience in Linux, Kubernetes, cloud technologies (AWS, Azure, OpenStack), automation (Ansible, Terraform), and DevOps. I hold certifications like RHCA, CKA, CKAD, CKS, AWS, and Azure.

16 thoughts on “How to Install iRedMail (Mail Server) on CentOS 7 / RHEL 7”

  1. Hello,

    I have installed iRedMail and I can send email without any problems but I can’t receive email. Would you happen to know of any reason this could happen?

    Thanks in advance,
    Gary B

  2. Hi I installed the server following this tutorial. It worked perfect for last 6 months . But 2 days ago the end user told he gets thousands of Mail Delivery Failure messages being sent to his mail box. I suspect my server is sending lots of spam emails out and I get the logs saying my IP is black listed. I am planning to reinstall everything but how do I secure from the spam attacks again..? What about SpamAssassin ?? Will this prevent this..?? Configuring the linux firewall will help..?? Please please advise.

    • Hi Manoj,

      It looks like one of the system from LAN is sending thousand of emails or spam emails to your mail server. This usually happens because of virus, check the email headers , there you will find the IP address of the affected system, disconnect it from the LAN and delete all emails from the queue. Try to whitelist your mail server public IP by sending whitelist request via portals.

      Enable & Configure SpamAssassin on your mail server and configure Linux firewall only if there is no hardware firewall in your env and allow only specific ports.


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