How to Install Mailu on POP! OS Latest

Mailu is a self-hosted email solution that is easy to use, scalable, and secure. This tutorial will guide you through the installation process of Mailu on the latest version of POP! OS.

Prerequisites

• A server running POP! OS with root access
• A registered domain name
• DNS records configured for your domain
• Ports 25, 80, 110, and 443 open on your firewall
• Basic knowledge of Linux commands and networking

Step 1: Install required packages

First, make sure your system is up to date by running the following commands:

sudo apt-get update
sudo apt-get upgrade

Next, install the required packages:

sudo apt-get install postfix dovecot-imapd dovecot-pop3d dovecot-lmtpd sudo \
nginx-full curl git

Postfix is a mail transfer agent, while Dovecot is an email retrieval agent. Nginx is a web server that is used to proxy traffic to the Mailu web interface.

Step 2: Install Docker

Mailu is composed of several Docker containers that run on your server. Install Docker by running the following commands:

sudo apt-get install apt-transport-https ca-certificates curl gnupg lsb-release

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

echo \
  "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io

Verify that Docker is installed and running:

sudo systemctl status docker.service

Step 3: Clone the Mailu repository

Clone the Mailu repository by running the following commands:

git clone https://github.com/Mailu/Mailu.git
cd Mailu

Step 4: Configure Mailu settings

Copy the example environment file:

cp .env.sample .env

Edit the .env file with your domain name, email address, and host IP address:

nano .env

For example:

DOMAIN_NAME=example.com
HOST_IP=your-server-ip-address
ADMIN_EMAIL=admin@example.com
LETS_ENCRYPT_EMAIL=admin@example.com

Note: Replace "example.com" and "your-server-ip-address" with your actual domain and IP address.

Step 5: Generate a password hash

Mailu requires a hashed password for the admin account. Generate a hash by running the following command:

sudo dovecot pw -s SHA512-CRYPT

Enter and confirm a password for the admin account when prompted. Copy the generated hash to the .env file:

ADMIN_PASSWORD={paste-the-hash-generated-above}

Step 6: Start Mailu

Start Mailu by running the following command:

sudo docker-compose up

This may take a few minutes to complete. The Mailu web interface will be available at https://example.com/admin (replace "example.com" with your actual domain name).

Step 7: Configure DNS records

Configure DNS records for your email domain by adding the following records:

MX          example.com          example.com  
CNAME       mail.example.com    example.com  
TXT          v=spf1 include:_spf.mail.example.com ~all   example.com   
A             mail.example.com    x.x.x.x

Replace "example.com" with your actual domain name and "x.x.x.x" with your server's IP address.

Note: It may take up to 24 hours for DNS changes to take effect.

Congratulations! You have successfully installed Mailu on POP! OS. You can now create email accounts and start using your self-hosted email solution.

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