116 lines
5.8 KiB
Plaintext
116 lines
5.8 KiB
Plaintext
Replied: Wed, 11 Sep 2002 20:04:55 +0100
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Replied: cjclark@alum.mit.edu
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Replied: spamassassin-talk@example.sourceforge.net
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From spamassassin-talk-admin@lists.sourceforge.net Wed Sep 11 19:43:23 2002
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Return-Path: <spamassassin-talk-admin@example.sourceforge.net>
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by jmason.org (Postfix) with ESMTP id 0EC3D16F03
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for <jm@localhost>; Wed, 11 Sep 2002 19:43:23 +0100 (IST)
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by localhost with IMAP (fetchmail-5.9.0)
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for jm@localhost (single-drop); Wed, 11 Sep 2002 19:43:23 +0100 (IST)
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esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17pBQJ-0005k2-00; Wed,
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17pBPe-0000WG-00 for <spamassassin-talk@lists.sourceforge.net>;
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Wed, 11 Sep 2002 10:36:26 -0700
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Received: from blossom.cjclark.org ([12.234.91.48]) by sccrmhc01.attbi.com
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(InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP id
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<20020911173620.FTHS16673.sccrmhc01.attbi.com@blossom.cjclark.org> for
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<spamassassin-talk@lists.sourceforge.net>; Wed, 11 Sep 2002 17:36:20 +0000
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<spamassassin-talk@lists.sourceforge.net>; Wed, 11 Sep 2002 10:36:19 -0700
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(PDT) (envelope-from crist.clark@attbi.com)
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Received: (from cjc@localhost) by blossom.cjclark.org
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(8.12.3/8.12.3/Submit) id g8BHaJpX087113 for
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spamassassin-talk@lists.sourceforge.net; Wed, 11 Sep 2002 10:36:19 -0700
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(PDT)
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X-Authentication-Warning: blossom.cjclark.org: cjc set sender to
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crist.clark@attbi.com using -f
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From: "Crist J. Clark" <crist.clark@attbi.com>
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To: spamassassin-talk@example.sourceforge.net
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Message-Id: <20020911173618.GA86845@blossom.cjclark.org>
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Reply-To: cjclark@alum.mit.edu
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MIME-Version: 1.0
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Content-Type: text/plain; charset=us-ascii
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Content-Disposition: inline
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User-Agent: Mutt/1.4i
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X-Url: http://people.freebsd.org/~cjc/
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Subject: [SAtalk] Reject, Blackhole, or Fake No-User?
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Sender: spamassassin-talk-admin@example.sourceforge.net
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Errors-To: spamassassin-talk-admin@example.sourceforge.net
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X-Beenthere: spamassassin-talk@example.sourceforge.net
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X-Mailman-Version: 2.0.9-sf.net
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Precedence: bulk
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List-Help: <mailto:spamassassin-talk-request@example.sourceforge.net?subject=help>
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List-Post: <mailto:spamassassin-talk@example.sourceforge.net>
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List-Subscribe: <https://example.sourceforge.net/lists/listinfo/spamassassin-talk>,
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<mailto:spamassassin-talk-request@lists.sourceforge.net?subject=subscribe>
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List-Id: Talk about SpamAssassin <spamassassin-talk.example.sourceforge.net>
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List-Unsubscribe: <https://example.sourceforge.net/lists/listinfo/spamassassin-talk>,
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<mailto:spamassassin-talk-request@lists.sourceforge.net?subject=unsubscribe>
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List-Archive: <http://www.geocrawler.com/redir-sf.php3?list=spamassassin-talk>
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X-Original-Date: Wed, 11 Sep 2002 10:36:18 -0700
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Date: Wed, 11 Sep 2002 10:36:18 -0700
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X-Spam-Status: No, hits=-7.3 required=7.0
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tests=FORGED_RCVD_TRAIL,KNOWN_MAILING_LIST,SIGNATURE_LONG_SPARSE,
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SPAM_PHRASE_03_05,USER_AGENT,USER_AGENT_MUTT,X_AUTH_WARNING
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version=2.50-cvs
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X-Spam-Level:
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This is not directly SpamAssassin related, but more of a general
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dealing-with-SPAM issue.
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What is the best way to deal with SPAM during the SMTP transaction?
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There are domains and addresses that I know are SPAM at the 'MAIL
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FROM' and can deal with at the SMTP level. I have been, and I think
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most people, respond with a 5.7.1 code, a "permanent" error. That
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pretty much means, "Don't bother to try from that address again,
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you'll get the same error." People often add cathartic messages to
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accompany the 550 like, "Spammers must die."
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But this might not be the best way to go. You are telling the spammers
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that you are on to them. This may cause them to try other methods to
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get around your blocks. Is it perhaps better to blackhole the mail?
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That is, act like everything is OK during the SMTP transaction, but
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then just drop the mail into the bitbucket. (This is generally how
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SpamAssassin works since almost everyone uses it after the SMTP
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transaction has completed successfully.) Spammer thinks everything is
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going fine and has no reason to try new methods.
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Then there is a third possibility. Instead of returning a 550 code
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indicating you're on to the spammer, fake a 5.1.1 response which is
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saying "mailbox does not exist." This would be in the hopes that some
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spammers out there actually remove names reported as non-existent from
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their lists. I know, a slim hope, but even if only a few do, it can
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lower the incidence.
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So, what are the arguments for each? Do spammers even look at _any_ of
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the bounce messages they get? The volume of bounces must be
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huge. Personally, I'm starting to think blackholes are the way to
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go... But sending back that "Spammer die, die, die," or stock "Access
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DEE-NIED!" (my ephasis added) message can be pretty satisfying. ;)
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--
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Crist J. Clark | cjclark@alum.mit.edu
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| cjclark@jhu.edu
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http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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-------------------------------------------------------
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In remembrance
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www.osdn.com/911/
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_______________________________________________
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Spamassassin-talk mailing list
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Spamassassin-talk@lists.sourceforge.net
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https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
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