[Mailman-Users] mail doesn't return

Mark Sapiro mark at msapiro.net
Sun May 10 20:05:16 CEST 2015

On 05/09/2015 11:28 PM, Camelia Botez wrote:
> I have a mailing list with a couple of wrong e-mail addresses .
> When I send a message to this mailing list I see in /var/log/maillog of the mailman server that those addresses get user unknown and  the messages is not sent , but I don't get back an  error mail  with user unknown

If you see that error in /var/log/maillog, it indicates the MTA accepted
the message from Mailman at SMTP time and should have returned a
non-delivery notification to the envelope sender which is the list's
-bounces address and that in turn should be recorded by Mailman as a
bounce assuming the list's Bounce processing -> bounce_processing
setting is Yes (See Barry Finkel's reply in this thread).

In my (Postfix MTA) log I will see things like:

May  6 09:45:41 sbh16 postfix/smtp[9314]: D42FD6900F9: to=<xxx at aol.com>,
relay=mailin-04.mx.aol.com[]:25, delay=7.6,
delays=5.4/0.11/0.51/1.6, dsn=5.2.1, status=bounced (host
mailin-04.mx.aol.com[] said: 521 5.2.1 :  AOL will not
accept delivery of this message. (in reply to end of DATA command))

Following the queue-id D42FD6900F9, I see

May  6 09:45:41 sbh16 postfix/bounce[9342]: D42FD6900F9: sender
non-delivery notification: 95BFB6900E2

and following that queue-id, I see

May  6 09:45:41 sbh16 postfix/local[9343]: 95BFB6900E2:
to=<list-bounces+xxx=aol.com at sbh16.songbird.com>,
orig_to=<list-bounces+xxx=aol.com at grizz.org>, relay=local, delay=0.35,
delays=0.01/0.01/0/0.34, dsn=2.0.0, status=sent (delivered to command:
/usr/local/mailman/mail/mailman bounces gpc-talk)

saying the bounce DSN was delivered to Mailman.

Is bounce_processing set to Yes for this list? If not, bounces are just

If so, bounces should be recorded in Mailman's bounce log.

In any case, read the Bounce processing section of the list's admin UI
for more on available settings and how bounce processing works in Mailman.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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