When my mailq get hundreds to thousands stacked up, all email slows to a crawl.

Is your DNS setup correctly? Can you confirm the NLxxxxx.shaw is able or not able to be resolved?

On 1/25/2022 3:21 PM, 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)
[root@vuwunicomailmp1 ~]# find /var/spool -name A2FC12B3C2
/var/spool/postfix/active/A2FC12B3C2
[root@vuwunicomailmp1 ~]#

Looking inside A2~

"8><----
Your message to xxxxx.s
h...@xxxxxx.nz couldn't be delivered.NLxxxxx.shaw wasn't found at xxxxxxxx.nz, 
or the mailbox is unava
ilabl=Ne.N2nz-libs-bounces
8><----

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.

TY

We are still getting delays of hours on odd emails in other lists which I cant 
fathom yet but it is not this impacting I think?


regards

Steven



________________________________
From: Mark Sapiro <m...@msapiro.net>
Sent: Tuesday, 25 January 2022 2:18 pm
To: mailman-users@python.org <mailman-users@python.org>
Subject: [Mailman-Users] Re: emails sitting in postfix mailq a long time

On 1/24/22 16:36, Steven Jones wrote:
Hi,

trying to figure out why there are a lot of these in postfix's mail queu,

75D752B3E0*  415295 Tue Jan 25 12:38:50  MAILER-DAEMON
                                           xxxxxx-bounces@lists.xxxxxx

Are these bounces back into mailman?
They could be. They also could be spam sent to the
xxxxxx-bounces@lists.xxxxxx address, but the MAILER-DAEMON sender makes
bounces more likely.

The asterisk says the message is active. Whats in the mail.log for
these? E.g.

grep 75D752B3E0 /var/log/mail.log

--
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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