[Mailman-Users] troubleshooting out queue backlog
Robert Heller
heller at deepsoft.com
Thu Sep 5 17:01:20 EDT 2019
At Thu, 5 Sep 2019 13:53:26 -0700 Kevin Bowen <kevin.t.bowen at gmail.com> wrote:
>
> Hello,
> This morning my mailman instance (2.1.9) was not delivering any mail - mail
> was going into it but not going out. Restarting mailman and sendmail caused
> mail to start flowing again, but several hours later there still appears to
> be a backlog of several thousand files in /var/spool/mailman/out - they're
> draining, but only very slowly, with some of them dating back to this
> morning, around the time of the restart, and mail delivery appears delayed.
> I'm not sure if it just needs more time to drain the queue, or if something
> is stuck somewhere that needs to be removed - I don't see anything relevant
> logged, but I'm not sure if I'm looking in the right place or what I should
> be looking for. Can anyone give me any pointers to what i should be looking
> at to troubleshoot this?
Look at Sendmail's logs. My *guess* is that someone is greylisting (or even
blacklisting) your domain or host.
Do you have SPF records and DKIM signing set up?
And mailman 2.1.9 is a really old version...
>
>
> Kevin Bowen
> kevin.t.bowen at gmail.com <kevin at ucsd.edu>
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>
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
heller at deepsoft.com -- Webhosting Services
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