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November 2021

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Expected mailq behavior/maintenance commands
by John Lake 02 Nov '21

02 Nov '21

Howdy, Not-so-longtime watcher—first time poster. I’ll start by saying how much that I appreciate this Mailman resource, as a noob it has proved very valuable for me. I inherited the service owner role of Mailman recently and have been impressed at how well it works. Have not had any major pings until a few days ago, our monitoring system alerts if the queue exceeds 400 messages and it spiked to more than 600. It appears that a mass mailer produced a large number of bounces. One of my co-workers moved some of the messages out of the queue and it rapidly went down to below 300—and then vacillated over the next few days between 225-260 messages. It is now below 200 messages. I have not monitored the queue this closely before and it has raised some questions. 😊 I’ve looked through the documentation and community posts on the GNU website and I have not found specific information relating to what the expected mailq behavior/healthy number of messages is. I expect that this would vary by the environment and number of messages sent but am curious as to what would considered to be a normal/healthy threshold of queued messages. Are there purge/maintenance commands that can be leveraged for normal maintenance or in the case above—more of a kill-switch purge? Thanks in advance for any assistance. Happy Friday! John Lake Application Security Analyst University of Oregon

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