Hello, I am having a problem with returned mail. I don't have something configured correctly. I have 6 virtual hosts on one machine and mail sent from these host is being returned. This is the transcript: The original message was received at Tue, 11 Apr 2006 07:30:19 -0400 from localhost.localdomain [127.0.0.1] ----- The following addresses had permanent fatal errors ----- <f5loar at charter.net> (reason: 553 #5.1.8 Domain of sender address <apache at localhost.localdomain> does not resolve) ----- Transcript of session follows ----- ... while talking to mail.charter.net.: >>> MAIL From:<apache at localhost.localdomain> SIZE=1618 <<< 553 #5.1.8 Domain of sender address <apache at localhost.localdomain> does not resolve 501 5.6.0 Data format error I think this has something to with outgoing address mappings but not sure how to fix it. All virtual hosts are included in the local domains file. TIA