On 5/31/23 06:17, justfixit@marilynstrother.com wrote:
Very interestng! Upon restarting the system (down momentarily for taking a snapshot) and starting Mailman again, all of these missing [List] messages emerged from their timewarp and were delivered to the members / subscribers. Just before shutting down the system I discovered that the apache2 webserver had been off the air due to a module not being enabled yet. As of yet, I was unaware of any requirement for a web server to be online (beyond possibly gunicorn) in order for Mailman to run its lists. Does that speculation have a factual basis? Or do I risk starting a vicious rumor amongst the impatient readers who are not still here once we deduce this pair of observations were merely correlated in time, with no cause-and-effect relationship? Before this situation healed itself, the thought had crossed my mind to peek and see if anything was stuck in the queues: https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/rest/docs/q... While that could have provided peace of mind that email messages were merely delayed instead of vanished, even in hindsight I do not see how that would have led to repairing the situation.
I suspect if you had looked, you would have found the messages in
Mailman's pipeline queue, and they were not being processed because
the pipeline runner wasn't running, although it is possible that the
issue was with the in runner/queue. It wasn't the out runner/queue
if welcome messages were being delivered.
The fact that the web server wasn't running is just a coincidence. It has nothing to do with Mailman core's processing of messages with the one exception that Mailman core needs to communicate with HyperKitty's API via mailman_hyperkitty, but this only affects archiving to HyperKitty and the addition of an Archived-At: header to messages.
In the absence of a hypothetical command: mailman status --verbose about which diagnostic tools or clues should I learn?
Logs are possibly the most useful. You might find something in mailman.log about the death of whatever runner had died. Looking at queues is also useful.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan