[Mailman-Users] No Bounce Notification

[Tony]

I am running a mailing list on 2.1.5 as a distribution list only and am not
receiving any bounce information, nor are the invalid addresses being
removed or disabled.  Here are my bounce settings:

Should Mailman perform automatic bounce processing?
Yes

Bounce Score Threshold
.5

Stale Data Discard
7

Disable Warning
0

Disable Warning Interval
1

Notifications:
All set to Yes

I have them said pretty sensitive right now for testing.  Anyone have any
ideas?  Any known bugs? Any work arounds?

Regards,
Tony