Author: Stan Ryckman <stanr(_at_)sunspot(_dot_)tiac(_dot_)net>
Original-Date: Mon, 19 Jan 1998 18:40:59 -0500
Message-ID:
<2(_dot_)2(_dot_)32(_dot_)19980119234059(_dot_)00908f18(_at_)pop(_dot_)ma(_dot_)ultranet(_dot_)com>
For procmail, for example, Resent-Sender: is always set. Many
other lists don't use that, but usually have an identifying header
of some sort. (There's a standard in the pipeline, and eventually
you may look for List-Unsubscribe:, but that will be a while
yet.)
Well, I check for spam by checking the Resent-Sender: and then checking the
To/Cc to see if procmail is listed there.
98% of the spam sent to the list does not have the name in the To/Cc, and no
one BCCs the list unless they are trying to prove that one shouldn't use
To/Cc as a check of the mailing list.
Just my opin.
TjL