I have a Linux Pop server in my network. I inherited this, so don't know the history, but this is what I have. 1. In DNS host name is email.abc.com and Cname is servername.abc.com 2. I changed DNS to have host name be servername.abc.com and Cname to be email.abc.com When I made this change, I started getting 550.5.71 Unable to Relay messages in my event viewer. Can't figure out what is causing this not to work. I figured changing the DNS entries shouldn't have any affect whatsoever on mail getting through. I do have an alias file that has the following info: username: username@email.cq.com This file was not changed. I thought the problem was that I needed to add the servername to the Recipient Policy (@servername.cq.com) but when I tried received: "The domain address cannot be used for a recipient policy because it matches the name of an Exchange Server. ID no: c1031340. any help would be most appreciated. Dee
