How to Install Mailcow on Fedora CoreOS

This tutorial will guide you through the installation of Mailcow on Fedora CoreOS. Mailcow is a feature-rich, open-source mail server software that can be used for both personal and business use.

Prerequisites

  • A VPS or dedicated server that runs Fedora CoreOS with root access.
  • A domain name pointing to your server's IP address.
  • Access to the SSH terminal.

Step 1: Update and Upgrade Fedora CoreOS

Before installing any software packages on Fedora CoreOS, you need to update and upgrade the system to its latest version.

sudo dnf update -y && sudo dnf upgrade -y

Step 2: Install Required Dependencies

Mailcow requires some dependencies to be installed on your system. You can install them using the following command:

sudo dnf install -y git wget docker python3-pip python3-jinja2 python3-virtualenv bzip2

Step 3: Download Mailcow

  1. Clone the Mailcow repository from Github:
sudo git clone https://github.com/mailcow/mailcow-dockerized.git /opt/mailcow/
  1. Change the current directory:
cd /opt/mailcow/
  1. Open the .env file using your favorite text editor:
sudo nano .env
  1. Configure the Mailcow settings according to your requirements, such as hostname, domain name, and email accounts.

Step 4: Install and Configure Mailcow

sudo ./generate_config.sh

The script will ask you a few questions, such as the MySQL root password, Admin User's email and password, and other settings. Answer them according to your requirements.

After completing the configuration, run the following command:

sudo docker-compose up -d

It will download and install all the necessary components for Mailcow, such as PostgreSQL, Dovecot, and Postfix.

Step 5: Access Mailcow Web Interface

You can access the Mailcow web interface using the following URL:

https://<your-domain-name>/admin

Enter the Admin user's email and password that you configured during the Mailcow installation to log in to the web interface.

Conclusion

Mailcow is now up and running on your Fedora CoreOS server, and you can use it to send and receive emails. You can configure and customize it further according to your requirements.