[Mailman-Users] Mailman delays sending emails

Mark Sapiro mark at msapiro.net
Sat Sep 10 11:32:12 EDT 2016

On 09/09/2016 06:16 PM, Anilkumar Padmaraju wrote:
> There are lot of .pck files under /usr/local/mailman/qfiles/in

This is unusual. Normally the queue that is backlogged is qfiles/out
because of slow delivery from Mailman to the MTA.

See some of the hits at

I have never seen a backlogged 'in' queue unless Mailman is not running
at all.

> I have an issue where the mailman server is delaying to send emails, which happened for the first time.
> It is not our mail server as mails other than mailman are going fine.
> The delay is over 6 hours.
> Can someone please suggest something to check.

However, in this case, messages are being delivered so Mailman is running.

You say it is not your server, yet you seem to at least have access to
Mailman's files.

Have you checked Mailman's logs (/usr/local/mailman/logs/*).

What Mailman version is this? If it is 2.1.18 or newer and a list has
dmarc_moderation_action set to other than Accept, it could be long
delays in DNS lookups of the From: domain's DMARC policy.

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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