Install mail server on Ubuntu or Debian Rumi, September 12, 2023 Disclaimer: This howto is tested on Ubuntu 16, 18, 20 and Debian 10, 11 edition. Installing and configuring postfix Step 1 » Assign static IP and hostname and add a host entry for the host name . Assign hostname in /etc/hostname mail.tweenpath.net Add a host entry in /etc/hosts 192.168.1.10 mail.tweenpath.net… Continue Reading