Lars Bjørndal writes:
Today, I find the following file in the shunt folder:
ls -l /opt/mailman3/mm/var/queue/shunt/-rw-rw---- 1 mailman3 mailman3 25473 des. 21 11:11 1703153465.6663258+bfbef88d4b3433eb5978cb42852601faee9ab00c.pck.tmp
What's this file? Should I take action or just remove it?
The .pck.tmp and .pck.bak files that are occasionally observed are there to ensure that Mailman can recover if the system goes down while processing a message. The shunt queue is a little different in that nothing is ever done automatically to messages in that queue, there needs to be operator intervention ("unshunt").
Generally you can remove those files if they aren't removed automatically, but if you're concerned you can use "mailman qfile" to examine the content. (You may need to rename to remove the extension .tmp or .bak.)
Steve