I am using postfix on an ubuntu 9.10 server. It is working perfectly on all parts of postfix/dovecot. I have it set up to forward through my router and there are MX and A records in my primary DNS server for the mail server. The mail server also has a DNS server (forwarding requests it can't answer to the primary DNS server). I commented out 'relayhost =' in my main.cf I don't want to use a relay host. I want to send out directly. Whenever I try to send to a domain other than the one hosted by the mailserver, I get an error stating. The mail server responded: 5.7.1 <email i was sending to>: Relay access denied. Please check the message recipient <email i was sending to> and try again. Please assist.