On 1/25/22 15:21, Steven Jones wrote:
That email has gone but we have a similar one running today,
[root@vuwunicomailmp1 ~]# grep A2FC12B3C2 /var/log/maillog
Jan 26 12:06:24 vuwunicomailmp1 postfix/smtpd[1701064]: A2FC12B3C2:
client=mail-sy4aus01lp2176.outbound.protection.outlook.com[104.47.71.176]
Jan 26 12:06:24 vuwunicomailmp1 postfix/cleanup[1700168]: A2FC12B3C2:
message-id=<5d76f972-5e21-4e35-9238-3c52fc431...@sy6pr01mb8442.ausprd01.prod.outlook.com>
Jan 26 12:06:24 vuwunicomailmp1 postfix/qmgr[1503666]: A2FC12B3C2: from=<>,
size=78692, nrcpt=1 (queue active)
...
It looks like the user doesnt exist so yes 99% sure it is a bounce. Just for
some reason this list is really bad at cluttering the mailq.
It's a bit of a puzzle. Postfix should be trying to deliver the mail to
Mailman's LMTP runner. It doesn't really matter what the content is.
Mailman's LMTP runner should either accept or reject the recipient, but
it appears that neither has happened and Postfix is just waiting.
Look for messages similar to these
```
Jan 25 20:04:28 2022 (16427) Available AUTH mechanisms: LOGIN(builtin)
PLAIN(builtin)
Jan 25 20:04:28 2022 (16427) Peer: ('127.0.0.1', 60119)
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) handling connection
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) >> b'LHLO
mail.mailman3.org'
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) >> b'MAIL
FROM:<m...@msapiro.net> SIZE=3913'
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) sender: m...@msapiro.net
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) >> b'RCPT
TO:<mailman-us...@mailman3.org>'
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) recip:
mailman-us...@mailman3.org
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) >> b'DATA'
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) >> b'QUIT'
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) connection lost
Jan 25 20:04:28 2022 (16427) ('127.0.0.1', 60119) Connection lost during
_handle_client()
```
in Mailman's smtp.log. It's tricky because the process that writes them
doesn't get notified when the log rotates so current messages may be in
an older generation of the log.
Note the connection lost messages are normal.
In any case, see if when you have a hung message in Postfix you get the
first few of those but not all. It will be interesting to see where they
stop if that's the case. These are written by aiosmtpd which actually
handles the Mailman side of this connection. What version do you have?
--
Mark Sapiro <m...@msapiro.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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