And for what it is worth, continued bounces.
From: cctalk-request at
classiccmp.org
To: ams at
gnu.org
Subject: confirm xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Sun, 05 Mar 2017 14:28:13 -0600
Your membership in the mailing list cctalk has been disabled due to
excessive bounces The last bounce received from you was dated
05-Mar-2017. You will not get any more messages from this list until
you re-enable your membership. You will receive 3 more reminders like
this before your membership in the list is deleted.