OK, I found out that my problem is not a mail loop, but that when sending
out digests, somehow sendmail fails, and cause Mailman to try to resend the
digest forever. Mailman is 2.0.9, does anyone know how to get the version
of sendmail?
Here's the excerpt from Mailman's error log:
Nov 08 13:20:
I have 5 mailing lists running under mailman, and I thought it would trap
auto-responders ("I am out of the office..."), but I just got flooded by
one such msg. Is there a setting I have missed barring changing the default
reply-to to Poster?
Barring that, I am going on vacations for a few day
