What would cause valid email addresses to be unknown periodically? They are valid before and after the following log entries and nothing on the server was changed.
This happens to something like 1-4 emails per day (sometimes 0). When it happens, all the recipient addresses in the mail are rejected. Aug 16 09:44:29 mxs01 postfix/smtpd[15032]: NOQUEUE: reject: RCPT from mf0.ffm0.de.carpe.net[212.96.133.20]: 550 5.1.1 <john....@foo.com>: Recipient address rejected: User unknown in virtual alias table; from=<op...@xyz.de> to=<john....@foo.com> proto=ESMTP helo=<mf0.ffm0.de.carpe.net> Aug 16 09:44:29 mxs01 postfix/smtpd[15029]: NOQUEUE: reject: RCPT from mf0.ffm0.de.carpe.net[212.96.133.20]: 550 5.1.1 <jane....@foo.com>: Recipient address rejected: User unknown in virtual alias table; from=<nop...@xyz.de> to=<jane....@foo.com> proto=ESMTP helo=<mf0.ffm0.de.carpe.net> This is a Mac OS X Snow Leopard Server with no postfix config modifications. Thanks, Ray
