Comment 2 for bug 905017

@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.