Bob Eastbrook wrote: > NOQUEUE: reject: RCPT from > web81307.mail.mud.yahoo.com[68.142.199.123]: 554 5.7.1 > <b...@myapp.appspot.com>: Relay access denied; > from=<a-yahoo-u...@yahoo.com> to=<b...@myapp.appspot.com> proto=SMTP > helo=<web81307.mail.mud.yahoo.com> >
This says that the yahoo user tries to send mail addressed to b...@myapp.appspot.com, not to b...@example.org. Your mail server is not configured to accept mail for that domain (but DNS records point to it), so either: - do not send mail to *...@myapp.appspot.com - add myapp.appspot.com to $mydestination Regards, Tom