[MM3-users] out queue backlog and delivery rate

We experienced an issue where our upstream mail protection gateway had an issue for a few hours. As a result out Mailman system was inundated with hundreds of messages within half an hour.

Mail delivery is continuing at a snails pace and it is now 4 hours behind.

I noticed that the system isn't overloaded either via CPU or Memory. It's just slowly "working on it".

Are there rate limits that can be tuned for Mailman queues such as the "out" queue? Could this be IO related somehow? I'd expect there to be a CPU spike in that case.

Please advise. Thanks in advance.

Dan Caballero Systems Administrator Academic Computing Solutions IMSS - Caltech https://imss.caltech.edu

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