With your Ubuntu LAMP Server up and running (see my previous article “Installing Ubuntu Server 9.04” and “How to: install a LAMP server“) and you are ready to set it up as a mail server. For the longest time Sendmail was the de facto standard Linux mail server. More here

In this article you are going to learn how to install Postfix on your already running Ubuntu Server 9.04. I am going to assume you have it networked and have a domain registered that you want to use. At the end of this article you should have a working mail server, ready for use.