On Fri, Jan 18, 2013 at 05:51:06PM -0500, Amir A. wrote: > Jan 17 11:49:02 zimbra postfix/smtpd[26986]: NOQUEUE: > milter-reject: RCPT from mail-ie0-f175.google.com[209.85.223.175]: > 550 5.1.1 User unknown; from=<aho...@hotmail.com> > to=<a...@zimbra.koala.somedomain.com> > proto=ESMTP helo=<mail-ie0-f175.google.com>
This milter rejects the recipient, don't use milters that reject recipient addresses you want to receive. Milters process the original address from the RCPT TO: command, not the results of alias expansion. Perhaps your milter is expecting something else. Don't blame the messenger, Postfix is just reporting the milter verdict. This sure does not look like a Postfix problem. -- Viktor.