How to Install Postal on OpenBSD

Postal is an open-source email server software that provides a simple and efficient solution for sending and managing bulk emails. In this tutorial, we will go through the steps to install Postal on OpenBSD.

Prerequisites

Before starting with the installation process, ensure that you have the following requirements met:

  • OpenBSD installed on your system.
  • At least 1GB of RAM to support the Postal application.
  • A non-root user with sudo privileges.

Step 1: Update OpenBSD Packages

First, we need to update the OpenBSD packages using the following command:

sudo pkg_add -uuv

This command will update all the packages on your OpenBSD system.

Step 2: Install Postal Dependencies

Postal requires some dependencies to run properly. We will install them using the following command:

sudo pkg_add redis mariadb-server mariadb-client ruby ruby-bundler ruby-rails node

Step 3: Install Postal

Now, we will install the Postal software by following the below steps:

  1. Create a new user for Postal:
sudo adduser -G wheel -s /bin/ksh -m -d /var/postal/ postal
  1. Log in as the new postal user:
sudo su - postal
  1. Get the Postal source code:
curl -s https://packagecloud.io/install/repositories/tpg/postal/script.rb | sudo ruby
  1. Install Postal:
postal install

This command will take some time to complete. Once done, Postal will be installed on your OpenBSD system.

Step 4: Configure Postal

After the installation, we need to configure Postal. We will use the following steps:

  1. Open the Postal configuration file:
sudo nano /opt/postal/config/postal.yml
  1. Update the following parameters:
:smtp_server_hostname: <your-server-hostname>
:smtp_server_port: 25
:postal_address: postmaster@<your-server-domain>
:hostname: <your-server-domain>
:app_url: https://<your-server-domain>
:secret_key: <your-secret-key>
  1. Save the file and exit.

Step 5: Start Postal

Now, we will start Postal using the following commands:

sudo svcadm enable mysql_10.3
sudo svcadm enable redis
postal start

Conclusion

That's it! You have successfully installed Postal on OpenBSD. You can now send and manage bulk emails with ease.