[ mailman-Bugs-699900 ] Postfix 450 keeps Mailman looping; doc suggestion

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Bugs item #699900, was opened at 2003-03-08 06:04
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Category: mail delivery
Group: 2.1 (stable)
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Walter Hop (life4m)
Assigned to: Nobody/Anonymous (nobody)
Summary: Postfix 450 keeps Mailman looping; doc suggestion

Initial Comment:
When Postfix is configured to give transient (450) SMTP errors on local error, and Mailman tries to send to an unknown local recipient, Mailman by default keeps trying to deliver the same message every second. 450 is the default on some Postfix installations.

This addition to README.POSTFIX might help other people in curing such a problem.

I also think retrying every second is a bit blunt, but I haven't investigated that - there's probably a parameter for it :)

cheers,
walter

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>Comment By: Barry A. Warsaw (bwarsaw)
Date: 2003-03-13 00:58

Message:
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Thanks.  Not only did I add a blurb to README.POSTFIX, but I
fixed the retry-every-second problem.

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Comment By: Walter Hop (life4m)
Date: 2003-03-08 06:06

Message:
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Attachment didn't go through...

Here is it:

--- README.POSTFIX    Sun Feb 23 23:41:10 2003
+++ README.POSTFIX Sat Mar  8 11:19:16 2003
@@ -25,6 +25,13 @@
     well with the default values for VERP_FORMAT and VERP_REGEXP in
     Defaults.py.
 
+    Some Postfix installations may have some error codes set to
+    4xx (transient) errors. To prevent Mailman from retrying erroneous
+    local addresses endlessly, it is advised to set the following in
+    main.cf:
+
+        unknown_local_recipient_reject_code = 550
+
     Finally, if you are using Postfix-style virtual domains, read the
     section on virtual domain support below.

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