Olaf Hering: > > Hello, > > can someone explain what happend to the bounce mails? > > post.strato.de requires authentication. > Due to a mistake on my side, I forgot to update the local postfix > configuration after a change to the server auth data. > > Does postfix silently drop a mail thats not deliverable to the relayhost?
Of course not. > Mar 30 19:46:26 ibook postfix/postfix-script[2754]: starting the Postfix mail > system > Mar 30 19:46:26 ibook postfix/master[2755]: daemon started -- version 2.4.5, > configuration /etc/postfix > Mar 30 20:23:01 ibook postfix/pickup[2763]: 01B47D010B: uid=1000 from=<olaf> > Mar 30 20:23:01 ibook postfix/cleanup[2912]: 01B47D010B: > message-id=<[email protected]> > Mar 30 20:23:01 ibook postfix/qmgr[2764]: 01B47D010B: from=<[email protected]>, > size=1963, nrcpt=2 (queue active) > Mar 30 20:23:03 ibook postfix/smtp[2914]: 01B47D010B: to=<[email protected]>, > relay=post.strato.de[81.169.145.136]:25, delay=2.6, delays=0.24/0.24/2.1/0, > dsn=5.7.0, status=bounced (SASL authentication failed; server > post.strato.de[81.169.145.136] said: 535 5.7.0 Falsches Password - Wrong > password) > Mar 30 20:23:03 ibook postfix/smtp[2914]: 01B47D010B: to=<[email protected]>, > relay=post.strato.de[81.169.145.136]:25, delay=2.6, delays=0.24/0.24/2.1/0, > dsn=5.7.0, status=bounced (SASL authentication failed; server > post.strato.de[81.169.145.136] said: 535 5.7.0 Falsches Password - Wrong > password) Mail for [email protected] is bounced, because the server replies with 535. Therefore an Internet standards-compliant MTA such as Postfix must send a non-delivery notification to [email protected], with the message that could not be delivered; either the whole message or just the headers. > Mar 30 20:23:03 ibook postfix/cleanup[2912]: 7CC3AD059B: > message-id=<[email protected]> > Mar 30 20:23:03 ibook postfix/qmgr[2764]: 7CC3AD059B: from=<>, size=4143, > nrcpt=1 (queue active) > Mar 30 20:23:03 ibook postfix/bounce[2916]: 01B47D010B: sender non-delivery > notification: 7CC3AD059B > Mar 30 20:23:03 ibook postfix/qmgr[2764]: 01B47D010B: removed > Mar 30 20:23:03 ibook postfix/smtp[2914]: 7CC3AD059B: to=<[email protected]>, > relay=post.strato.de[81.169.145.136]:25, delay=0.1, delays=0.01/0/0.09/0, > dsn=5.7.0, status=bounced (SASL authentication failed; server > post.strato.de[81.169.145.136] said: 535 5.7.0 Falsches Password - Wrong > password) > Mar 30 20:23:03 ibook postfix/qmgr[2764]: 7CC3AD059B: removed YOU CONFIGURED POSTFIX to deliver mail for [email protected] via post.strato.de. This system rejects the mail with 535. When a non-delivery notification is undeliverable, an Internet standards compliant such as Postfix discards the message, because otherwise the mail system would go into an infinite loop (and you would not receive a copy anyway). If you don't want this to happen, turn on soft bounces in main.cf /etc/postfix/main.cf: soft_bounce = yes If you do this, then you have to watch your queue carefully otherwise you will never find out that some mail is sitting in the queue forever. Wietse
