Would it be useful to look at the logs to see the bounces?
As an example I run a script to look for members who have been knocked
off the list by excessive bouncing...
MONTH=`date -dlast month +%b`
echo $MONTH
grep -hs disabled /home/mailman/logs/bounce.1 \
/home/mailman/logs/bounce
Hmmm, your best bet might be to modify your Bounce handlers so that
these errant bounces are captured by Mailman.
I would be happy to take a whack at the ones it's missing if you want to
forward them on. No guarantees, but at least I'll do no harm!
The rest of what you want will have to wait