How To Install Roundcube Webmail on CentOS 8

Install Roundcube Webmail on CentOS 8

In this tutorial, we will show you how to install Roundcube Webmail on CentOS 8. For those of you who didn’t know, Roundcube is a popular Webmail interface written in PHP programming language. You can access Mailbox created on your Linux server through POP/IMAP on the Roundcube web interface.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of Roundcube Webmail on CentOS 8.


  • A server running one of the following operating systems: CentOS 8.
  • It’s recommended that you use a fresh OS install to prevent any potential issues.
  • A non-root sudo user or access to the root user. We recommend acting as a non-root sudo user, however, as you can harm your system if you’re not careful when acting as the root.

Install Roundcube Webmail on CentOS 8

Step 1. First, let’s start by ensuring your system is up-to-date.

sudo dnf clean all
sudo dnf update

Step 2. Installing LAMP Stack.

If you don’t have a LAMP stack already installed on your server, you can follow our guide here.

Step 3. Installing Roundcube Webmail on CentOS 8.

Now we download the Roundcube installer from the official website:

wget https://github.com/roundcube/roundcubemail/releases/download/1.4.11/roundcubemail-1.4.11-complete.tar.gz
tar -zxvf roundcubemail-1.4.11-complete.tar.gz
mv roundcubemail-1.4.11 /var/www/html/roundcubemail

We will need to change some folders permissions:

chown -R apache:apache /var/www/html/roundcubemail 
chmod -R 755 /var/www/html/roundcubemail

Step 4. Configuring MariaDB for Roundcube.

By default, MariaDB is not hardened. You can secure MariaDB using the mysql_secure_installation script. You should read and below each step carefully which will set a root password, remove anonymous users, disallow remote root login, and remove the test database and access to secure MariaDB.


Configure it like this:

- Set root password? [Y/n] y
- Remove anonymous users? [Y/n] y
- Disallow root login remotely? [Y/n] y
- Remove test database and access to it? [Y/n] y
- Reload privilege tables now? [Y/n] y

Next, we will need to log in to the MariaDB console and create a database for Roundcube. Run the following command:

mysql -u root -p

This will prompt you for a password, so enter your MariaDB root password and hit Enter. Once you are logged in to your database server you need to create a database for Roundcube installation:

MariaDB [(none)]> CREATE DATABASE roundcubemail;
MariaDB [(none)]> CREATE USER 'roundcube'@'localhost' IDENTIFIED BY 'your-strong-passwords';
MariaDB [(none)]> GRANT ALL ON roundcubemail.* to 'roundcube'@'localhost';
MariaDB [(none)]> Exit

Step 5. Configuring Apache for Roundcube.

We will create an Apache virtual host for your Roundcube. First, create ‘/etc/apache/conf.d/vhosts.conf’ file with using a text editor of your choice:

nano /etc/apache/conf.d/vhosts.conf
IncludeOptional vhosts.d/*.conf

Next, create the virtual host:

mkdir /etc/apache/vhosts.d/
nano /etc/apache/vhosts.d/your-domain.com.conf

Add the following lines:

<VirtualHost YOUR_SERVER_IP:80>
   ServerAdmin webmaster@yourdomain.com
   DocumentRoot "/var/www/html/roundcubemail"
   ServerName your-domain.com
   ServerAlias www.your-domain.com
   ErrorLog "/var/log/httpd/yourdomain.com-error_log"
   CustomLog "/var/log/httpd/yourdomain.com-access_log" combined

<Directory "/var/www/html/roundcubemail">
   DirectoryIndex index.html index.php
   Options FollowSymLinks
   AllowOverride All
   Require all granted

Save and close the file. Restart the Apache service for the changes to take effects:

systemctl restart httpd.service
systemctl enable httpd.service

Step 6. Installing SSL for Apache on CentOS 8.

Run these commands on the command line on the machine to install Certbot:

wget https://dl.eff.org/certbot-auto
sudo mv certbot-auto /usr/local/bin/certbot-auto
sudo chown root /usr/local/bin/certbot-auto
sudo chmod 0755 /usr/local/bin/certbot-auto

Then, run this command to get a certificate and have Certbot edit your Apache configuration automatically:

sudo /usr/local/bin/certbot-auto --apache

Step 7. Configure Firewall.

Before accessing the Roundcube web interface, you will need to allow HTTP and HTTPS service through firewalld:

sudo firewall-cmd --add-port={http,https} --permanent
sudo firewall-cmd --reload

Step 8. Accessing Roundcube Webmail Web Interface.

Invoice Ninja will be available on HTTP port 80 by default. Open your favorite browser and navigate to https://your-domain.com/ and complete the required steps to finish the installation.

Install Roundcube Webmail on CentOS 8

Congratulations! You have successfully installed Roundcube. Thanks for using this tutorial for installing Roundcube Webmail on your CentOS 8 system. For additional help or useful information, we recommend you check the official Roundcube Webmail website.

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r00t is a seasoned Linux system administrator with a wealth of experience in the field. Known for his contributions to idroot.us, r00t has authored numerous tutorials and guides, helping users navigate the complexities of Linux systems. His expertise spans across various Linux distributions, including Ubuntu, CentOS, and Debian. r00t's work is characterized by his ability to simplify complex concepts, making Linux more accessible to users of all skill levels. His dedication to the Linux community and his commitment to sharing knowledge makes him a respected figure in the field.
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