Mailing lists to big lists can take a long time to send mail

[Gary Poster]

(originally from a question)
When I send mail to the openstack mailing list it can take 1+ hours to final deliver the mail. It appears like this issue is in forster.canonical.com. i.e:

from adelie.canonical.com ([91.189.90.139]) by -.rackspace.com with ESMTP; 15 Dec 2011 13:05:33 -0600
 Received: from forster.canonical.com ([91.189.90.190]) by adelie.canonical.com with esmtp (Exim 4.71 #1 (Debian)) id 1RbGcW-0002PK-Qg for <[e-mail]>; Thu, 15 Dec 2011 19:05:32 +0000
 Received: from forster.canonical.com ([91.189.90.190]) by forster.canonical.com with esmtp (Exim 4.60 #1 (Debian)) id 1RbGcW-0000FM-FA for <[e-mail]>; Thu, 15 Dec 2011 19:05:32 +0000
 Received: from -.google.com ([209.85.213.48]) by forster.canonical.com with esmtp (Exim 4.71 #1 (Debian)) id 1RbG2g-00039n-5s for <email address hidden>; Thu, 15 Dec 2011 18:28:30 +0000
 Received: by yhpp56 with SMTP id p56so2763880yhp.35 for <email address hidden>; Thu, 15 Dec 2011 10:28:29 -0800 (PST)

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spm reports that this is a known issue on the Launchpad side, and needs to be addressed within Mailman. wgrant confirms, and adds that fixing constant mhonarc errors may solve this and other issues.

[Aaron Lee (aaron-lee)]

Gary, thanks for moving this in the correct direction. I've noticed this issues is more apparent during the US afternoon& evening. Please let me know what information I can provide to help you diagnose this issue.

[Francis J. Lacoste (flacoste)]

@Gary, I disagree this isn't a know issue within Mailman. The Mailman smtp logs show that it takes about 5 minutes to send all email to the configured SMTP hosts to deliver all emails to the openstack list. What happens before and after we don't know, but I've seen no evidence that this time was spent in Mailman. Might be other problems in our email architecture though.

If you get the Message-ID from that particular email, we can probably trace it through the logs of our various SMTP hops in our system.

[Francis J. Lacoste (flacoste)]

Also this is completely unrelated to the archiving issues.

[Robert Collins (lifeless)]

I believe this was fixed by changing the max recipients-per-connection limit?

[Launchpad Janitor (janitor)]

[Expired for Launchpad itself because there has been no activity for 60 days.]