How to Install iRedMail on Ubuntu 22.04

Prerequisites Before you begin: Have an Ubuntu 22.04 server with at least 4 GB RAM. Set up at least 2 domain DNS records pointing to the instance’s IP address. For example, mail.example.com and example.com. Access the server using SSH as a non-root user with sudo privileges. Open a new support ticket and request the SMTP port 25 to be unblocked on your…