Installation of Docker Mailserver on Fedora CoreOS Latest

Docker Mailserver is an open-source mail server software that enables you to run a complete mail server on your server or personal computer. In this tutorial, we will explain how to install Docker Mailserver on the latest version of Fedora CoreOS using the command line.

Prerequisites

Before proceeding with the installation, make sure you have the following:

• A server or machine running the latest version of Fedora CoreOS with SSH access.
• A domain name and MX records already set up.

Step 1: Install Docker and Docker Compose

First, we need to install Docker and Docker Compose on our Fedora CoreOS. To do this, run the following commands:

sudo dnf install -y docker
sudo systemctl enable docker
sudo systemctl start docker

Then, install Docker Compose by running:

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" \
-o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

You can verify the installation by running the following command:

docker-compose -v

Step 2: Clone Docker Mailserver Repository

Next, we will clone the Docker Mailserver repository onto our system using the Git command:

sudo git clone --depth 1 https://github.com/docker-mailserver/docker-mailserver.git

Step 3: Setup Docker Mailserver

After cloning the repository, navigate into the directory and copy the example configuration file:

cd docker-mailserver
sudo cp env-mailserver.sample .env

Next, edit the .env file and set the following values:

HOSTNAME=example.com
DOMAINNAME=example.com
FIRST_DOMAIN=example.com
MAIL_USER=user
MAIL_PASSWORD=password

Remember to replace the values with your own domain name, username, and password.

Step 4: Run Docker Mailserver

Finally, start the Docker Mailserver container by running the following command:

sudo docker-compose up -d

This will start the Mailserver container in the background. You can verify that the container is running by running the following command:

sudo docker ps

Step 5: Verify Mailserver Configuration

You can verify the Mailserver configuration by testing the mail server using an external mail client. Use the following settings:

• Server: mail.example.com
• Username: user@example.com
• Password: password
• Port: 587

Conclusion

In this tutorial, we have explained how to install Docker Mailserver on the latest version of Fedora CoreOS. With Docker Mailserver, you can easily set up your own email server for your domain name, and have full control over your email communication.

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