Postal is an open-source mail server that is designed to be fast, scalable, and easy to install. In this tutorial, we will go through the steps to install Postal on POP! OS Latest.
Before we start, make sure you have the following prerequisites:
Make sure your system packages are up-to-date with the following command:
sudo apt-get update && sudo apt-get upgrade -y
Postal requires several dependencies to be installed before it can be installed successfully. Run the following command to install needed dependencies:
sudo apt-get install -y curl systemd libsystemd-dev libsqlite3-dev ruby-dev build-essential libssl-dev libreadline-dev libncurses5-dev zlib1g-dev
Open ports 25, 587, and 465 for SMTP, SMTP submission, and SMTPS, respectively. Use the following command to allow access to those ports:
sudo ufw allow 25/tcp && sudo ufw allow 587/tcp && sudo ufw allow 465/tcp
Postal is written in Ruby, so you need to install Ruby before you can install Postal. Use the following commands to install Ruby:
sudo apt-get install -y ruby-full
Once installed, check the version of Ruby with the following command:
ruby -v
Now that you have installed all the dependencies and Ruby, you can begin installing Postal. Use the following commands to install Postal:
sudo gem install bundler
sudo gem install postal --no-document
Before using Postal, you need to generate a configuration file. Use the following command:
sudo postal initialize-config
Next, generate the Let's Encrypt SSL certificate with the following command:
sudo postal make-ssl-certificate
Now start Postal services with the following command:
sudo postal start
This command will start all the required Postal services. You can check the status of Postal with the following command:
sudo postal status
Postal comes with a user-friendly web interface that you can use to manage your mail server. To access the interface, open your web browser and enter the following URL in the address bar:
https://your.domain.com/
Note: Replace your.domain.com with your actual domain name.
You will be prompted to create an administrative user account. Once you create the account, you can access the Postal dashboard to start creating email accounts.
In this tutorial, you have successfully installed and configured Postal on POP! OS Latest. Now you can start sending and receiving emails using your very own mail server. Happy mailing!
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