Mail Relay Guide for Noobs

[Husse]

I've only found a guide for Mandriva
http://www.howtoforge.com/mandriva_post ... s_exchange
and don't forget this which I agree with

Most people I know would never ever under any circomstances consider making an Exchange server accessible to the internet.

This is not quite what you are looking for but interesting
http://www.howtoforge.com/forums/showth ... p?p=133314
but perhaps this is what you are looking for
http://howtoforge.org/the-perfect-spamsnake-ubuntu-8.04