Hi,
A few updates on the general issues related to bouncing:
1. We worked with Mailman developers to improve the bounce parsing so
it's less likely miss-process a bounce message. This might help in a few
cases where list owners were getting unsubscribed. This was deployed a
few hours ago. <https://phabricator.wikimedia.org/T285120>
2. We're looking into enabling "verp probes". If an address hits the
bounce score, Mailman will send them a dedicated email, and if *that*
mail bounces, then they get unsubscribed. This will prevent getting
unsubscribed when spam/viruses go to the -owner address and are bounced.
<https://phabricator.wikimedia.org/T285361>
3. We're discussing with upstream about just disabling bounce processing
of the -owner address altogether.
<https://gitlab.com/mailman/mailman/-/issues/912>
If you're still running into bouncing issues or other issues please let
us know and we'll look into them.
Thanks,
-- Kunal