82 lines
4.0 KiB
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82 lines
4.0 KiB
Plaintext
From spamassassin-talk-admin@lists.sourceforge.net Thu Aug 29 11:07:57 2002
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<spamassassin-talk@lists.sourceforge.net>; Thu, 29 Aug 2002 00:06:11 +0000
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Subject: Re: [SAtalk] O.T. Habeus -- Why?
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MIME-Version: 1.0 (Apple Message framework v482)
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From: Brian McNett <bmcnett@radparker.com>
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To: spamassassin-talk@example.sourceforge.net
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X-Original-Date: Wed, 28 Aug 2002 17:05:49 -0700
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Date: Wed, 28 Aug 2002 17:05:49 -0700
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On Wednesday, August 28, 2002, at 01:50 PM, Robin Lynn Frank wrote:
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> And if a spammer forges headers???
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Header forgeries are trivially easy to detect. The main way that
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spammers hide their originating IPs is not by forging headers,
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but by sending through open proxy servers. It used to be that
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spammers used open relay mailserver, but these often betray the
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originating IP, and the proliferation of open relay blocklists,
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and the introduction of port 25 blocking on the part of many
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ISPs make open relays unattractive to spammers.
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One would think, that the combination of a forged Habeas-SWE,
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and mail sent through an anonymizing open proxy would be a
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fairly good indication of spam. Tracking a spammer to his
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meatspace location is not as difficult as you might think, once
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you have legal recourse to subpoena records.
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--B
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-------------------------------------------------------
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_______________________________________________
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