Milter-greylist

I apologize for the offtopic message...

In conjunction with milter-greylist, I have been using milter-regex
(http://www.benzedrine.cx/milter-regex.html).
However, they appear not to have a forum/maillist, etc.  Subscribing to
the list bounces back, even though there seems to be activity.

I am wondering:
 - Is anyone else using milter-regex and know of a place to ask
questions regarding it?
 OR
 - Is anyone else using a milter to check for invalid HELOs, etc.?