On Wed, 24 May 2000 05:51:17 CDT, "Michael L. Wyland" <[log in to unmask]>  said:
> Our forums are public and moderated, and our moderators are receiving daily
> doses of spam that we'd like to stop (or limit) if we can.  We believe that
> we have implemented the spam filtering options available to us using
> LISTSERV 1.8d under Windows NT, but our list moderators sometimes see the

One not-exactly-spam related suggestion:

Change 'Subscribe = Open' to 'Subscribe = Open,confirm'.  This will cut down
the bounce messages your moderators have to deal with.  It also puts a crimp
into the automated address trawlers that do a 'subscribe/review/unsub' to
get your address lists.

The other possibility for reducing the spam load is to make sure that spam
never makes it to your Listserv machine in the first place.  What we do
locally is to check the source of mail against several databases of known
open-relay sites (see http://www.mail-abuse.org and http://www.orbs.org
for more information).  I'm not sure how easy/practical it is to do this
under whatever SMTP software you're running on NT - I'm a Sendmail sort of guy.
--
                                Valdis Kletnieks
                                Operating Systems Analyst
                                Virginia Tech