mailman is disabling unrelated emails and failing to deliver to lots of providers

I got this on 2024-11-29 00:00:06:

Your subscription has been disabled on the tor-consensus-health@lists.torproject.org mailing list
because it has received a number of bounces indicating that there may
be a problem delivering messages to gk@torproject.org.  You may want to
check with your mail administrator for more help.

If you have any questions or problems, you can contact the mailing
list owner at

    tor-consensus-health-owner@lists.torproject.org

Now, I as a moderator/owner got:

Georg Koppen <gk@torproject.org>'s subscription has been disabled on tor-consensus-health@lists.torproject.org due to their bounce score
exceeding the mailing list's bounce_score_threshold.

The triggering DSN if available is attached.

but there was nothing attached.

And other subscribers, like @arma, @ahf and @micah got their subscription disabled as well, for whatever reason.