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| | |-+  old postfix version is sending 450 instead of 550 if unknown user found		 0 Members and 0 Guests are viewing this topic. « previous next »
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Author Topic: old postfix version is sending 450 instead of 550 if unknown user found  (Read 7814 times)
konus
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« on: Thursday 21 July 2011, 01:56:32 am »
I was wondering why postfix sends error 450 instead of 550 if the mailserver reports that the user is unknown.

Quote
postfix/smtpd[16033]: NOQUEUE: reject: RCPT from srvxxx.sysproserver.de[78.138.89.]: 450 4.1.1 <falscheAdresse@yyy.de>: Recipient address rejected: undeliverable address: host 192.168.1.11[192.168.1.11] said: 550 Address "<falscheAdresse@yyy.de>" not known here. (in reply to RCPT TO command); from=<absender@.de> to=<falscheAdresse@yyy.de> proto=ESMTP

It turns out that this behavior is from an very old postfix version and changed in Postfix Version 2.5. Newest stable Version of postfix ist 2.8.4, but on my endian is postfix version 2.3.3 installed. (checked with  postconf mail_version on shell)

Now I wounder, why there is such an stale version of postfix (from August 2006 I guess) running on endian V2.4.1 community?
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