Followed this guild here: http://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-ubuntu8.10 After a bunch of fiddling I finally got it to internally all me to mail users that where in my DB [from my command line using mailx at least]. I can also log into the accounts via SquirrelMail. For some reason or another I can not mail outside of the the system or receive mails into the system. Either way you go it returns an error of: No Such User Here. So now I'm tearing my hair out, any thoughts?