On 18.10.17 21:07, Luis Miguel Flores dos Santos wrote:
>Hi, I have a postfix using as a mail proxy. In our environment, I use
>I create in memcache a wildcard * with status bounce 500 No such user here.
>When the MTA(exchange) bounce the message it returns to the same postfix
> and it checks if the recipient exists, but it's a bounce message and the
> sender sometimes doesn't exist inside the environment.
this problem happens often, when you accept a mail while you don't know if
you can verify it.
This is rejected because of message size, not unknown user. You should
configure the same message_size_limit as your exchange server has.
>[root@SERVER01 ~]# cat /var/log/maillog | grep 5F5013E85A
>Oct 18 17:30:07 SERVER01 postfix/cleanup: 5F5013E85A: message-id=<[hidden email]>
>Oct 18 17:30:07 SERVER01 postfix/bounce: 39B2E3E845: sender non-delivery notification: 5F5013E85A
>Oct 18 17:30:07 SERVER01 postfix/qmgr: 5F5013E85A: from=<>, size=7622, nrcpt=1 (queue active)
>Oct 18 17:30:07 SERVER01 postfix/error: 5F5013E85A: to=<[hidden email]>, relay=none, delay=0.03, delays=0/0.02/0/0, dsn=5.0.0, status=bounced (No Such User Here)
>Oct 18 17:30:07 SERVER01 postfix/qmgr: 5F5013E85A: removed
>Existe a way to postfix use another transport method to send bounce messages? or I can do it only with "before queue"?
in the "before queue" case you don't need to solve anything - the message is
not accepted, so the bounce generation is not up to you.
Matus UHLAR - fantomas, [hidden email] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address.
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