We have recently ran into a problem with our postfix server. I am running SuSE 9.3. When I try to telnet into our server, I get the message: I don't get the chance to login to the mail server. It was working, but now it's not. The mail logs list this: Listing of main.cf file If anyone could point me in the right direction, that would be greatly appreciated. If you require more information, please let me know.