[Mailman-Users] Why are mails not being sent to all users (mails seem to disappear)?

Till Dörges doerges at pre-sense.de
Thu May 9 06:49:21 EDT 2019

Hello all,

we're using mailman-2.1.29 to operate a list where all users are moderated.
The MTA used is postfix 3.2.0.

Generally everything seems to be working fine. I.e. when I send out an e-mail I have
several confirmations that it arrives under the addresses subscribed to the list.

However, (at least) for one user the e-mail does not arrive. And I would at least
like to find out the reason. But there's no trace of the address in any of the
logfiles that should hold an entry (see below).

Generally I'm able to send messages using my MUA to the corresponding e-mail address
using the very same postfix also delivering the mailman messages. So I'm guessing
it's nothing like DMARC problems or the likes.

Like I said, what really puzzles me is that I cannot find the address in either

    /var/log/mail		(postfix)
or  /var/lib/mailman/logs/*	(mailman)

/var/lib/mailman/logs/error doesn't contain any entries.

/var/lib/mailman/logs/bounce does contain some addresses with a bounce score of 1.0
which are for /other/ e-mail addresses also subscribed to the list in question.

/var/log/mail contains entries for /some/ of the addresses subscribed (including some
bounces), but *not* for all.

/var/lib/mailman/logs/smtp gives me a log entry with the original messages and claims
to have sent it to 416 recips (which is correct).

But overall I'm only able to find roughly half in either /var/log/mail or

Why are not all 416 addresses listed in /var/log/mail, assuming that mailman handed
416 mails to postfix?

Do I have any chance of finding out what happened to the mails to the addresses which
don't appear in any of the log files?

Any hints/insights are greatly appreciated!

Thanks -- Till
PRESENSE Technologies GmbH            Sachsenstr. 5, D-20097 HH
Geschäftsführer/Managing Directors       AG Hamburg, HRB 107844
Till Dörges, Jürgen Sander               USt-IdNr.: DE263765024

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