Hey guys, So I installed ubuntu and ISPConfig by following the how2forge guide and didn't run into any troubles. I am not sure if I set up my DNS entries though. I registered a domain at godaddy and edited the DNS entries so that NS1.xxx.com and NS2.xxx.com would both point to my server which is running two static ips, eth0 and eth0:0. I then registered another domain (yyy.com) and pointed it's name servers to NS1.xxx.com and NS2.xxx.com. I also added the site to my ISP config and when I go to yyy.com or www.yyy.com it correctly redirects. Where I run into trouble is when trying to setup my email client at home to point to my mail server. It sucessfully logs into my mailserver but whenever I try to send a message it says "Relay access denied." If I go through the /webmail/ I can sucessfully send emails out fine, however when I try to email firstname.lastname@example.org from my gmail I get the following error: This leads me to believe that maybe I forgot to change the hostname from "server1.example.com" somewhere but I've checked all the obvious places and it's updated. main.cf local-host-names hostname -f ns1.xxx.com virtusertable dig mx yyy.com Is it possible that I incorrectly did the mx record for the godaddy domain xxx.com? dig mx xxx.com are my MX records incorrect? If so, how do I correctly configure them for yyy.com in ISPConfig, or for godaddy DNS xxx.com? Thanks for the help guys.