It's my understanding that very few of these come back to the list
address any more (they used to do it regularly: I remember lists
being flooded with dueling auto-receipt messages).

> Is there a way I can prevent return receipts being sent to the list?

If they're going only to the individual sender, it's an annoyance,
but no big problem.  Receipts being distributed on the list are, and
I contact the sysadmin or postmaster from the offending address
(since normally you _can't_ contact the user).  I've assumed it was
impossible to catch them generically before distributing them on the
list, simply because if it were possible it'd have been done.

                                  -- Russ
                                __|~_
Russell A. Hunt            __|~_)_ __)_|~_    Professor of English
St. Thomas University      )_ __)_|_)__ __)  PHONE: (506) 452-0424
Fredericton, New Brunswick   |  )____) |       FAX: (506) 450-9615
E3B 5G3   CANADA          ___|____|____|____/    [log in to unmask]
                          \                /
      ~~~~~~~~~~~~ http://www.StThomasU.ca/~hunt/ ~~~~~~~~~~~~