Re: Spam filters

From: Mark Landers (mlanders@netcom.com)
Date: Thu, 20 Nov 1997 20:37:14 -0500

In article <sc/c00ElJ//W092yn@kcbbs.gen.nz>,
kerry@kcbbs.gen.nz (Kerry Sainsbury) wrote:
:Hi Team,
:
:Sorry if this is a FAQ, but I'm trying to extend Yarn's filtering
:ability.
:
:I'm continually being bombarded with MLM "opportunties" which
:I'd like to filter into oblivion. Yarn's built-in filtering doesn't
:let me setup *lots* of "spam" addresses (I'd like to filter based on
:keywords in the message content), so I figure there might be
:something else available to me....
:
:Anyway, I get my Yarn mail via uqwk, and am keen to know if there's
:anything I can stick on the Unix box, or my Win95 box, that I can use
:to filter my SOUP packets, so that I can destroy all the MLM crap with.
:
:Anybody got any ideas?
:
:Thanks,
:Kerry "I don't want to have to write my own filter program" S

I posted this a few weeks ago.

Spam email is always sent using a fake To: line with thousands of
addresses in the Bcc: line. This way the spammers only have to send one
copy of the email; their server's mail program does the rest. But you
can take advantage of this.

Rename all filters for mailing lists and digests to start with "a" (I
use aa, ab, ac... but you could also use anameoflist1, anameoflist2
and so on).

Make a filter called b which searches for your correct username in the
To: line and sends the message to inbox.

For safety, make a filter called c which searches the From: line for
admin@your_domain (or whatever ID your system administrator uses) and
sends it to inbox.

Make 2 filters called z and zz which search for the character @ in the
To: and From: line and send the message to junk (or if you're sure you
haven't forgotten any lists, to delete).

Since Yarn processes filters alphabetically, first, all your mailing
lists will be sent to wherever you want, second, anything correctly
addressed to you or from your system administrator will be put in your
inbox and, third, everything else (which is spam) will be sent to junk
or deleted.

Since I set this up, of about 100 UCEs only 3 (which were actually
adressed to me) have gotten through to my inbox.

--
      Mark Landers      |     The object of opening the mind
        mlanders        |        as of opening the mouth
           @            | is to close it again on something solid
       netcom.com       |          - G. K. Chesterton -
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