Postfix - Mail bounce
It's highly appreciated if someone can tell me a solution for my below problem: -
I have a postfix mail server on ubuntu 10.04 lts behind a router. so all local users are fetching/sending mails through ms outlook using local IP. Sometimes when internet goes down and any mail send then it bounced back immediately saying domain not found. Can u please tell me how i configure to hold all mails in postfix server rather than bounce when internet fails and will pass through when restored the internet around 15-30 minutes?
Check your postfix's main.cf for bounce_queue_lifetime parameter, if it is set to 0 then delivery attempts tried only once. (It is 5 days by default).
There is no any "bounce_queue_lifetime" parameter but smtpd_error_sleep_time = 0. Please tell if the "smtpd_error_sleep_time" is causing the problem or not?
Did you google for the given keywords / configuration parameters?
Then you'd have come across: http://www.postfix.org/postconf.5.html
According to the above documentation, I'd say changing smtpd_error_sleep_time back to 1 (default) won't help here.
Maybe it helps to see your main.cf and the exact error message from the logs. As for my understanding "bounce_queue_lifetime" (which is set to 5d by default) should work for this, as the message is kept for 5 days until it gets back to the original sender.
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