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HELO_DYNAMIC_DHCP and HELO_DYNAMIC_IPADDR both will not match if an ISP's
relay is used; they fire only if the "last untrusted" IP delivered them
directly.

They also do not act on rDNS; they act on HELO strings that match that
kind of rDNS.  Major difference.

- --j.

Marco d'Itri writes:
>A single generic rDNS in a Received header is enough to raise way too
>much the score.
>Also, it appears that this check would be applied even to mail
>delivered trought an ISP relay.
>
>X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on wonderland.linux=
>=2Eit
>X-Spam-Level: *****
>X-Spam-Status: Yes, score=3D5.4 required=3D5.0 tests=3DBAYES_00,HELO_DYNAMI=
>C_DHCP,
>        HELO_DYNAMIC_IPADDR autolearn=3Dno version=3D3.1.0
>X-Spam-Report:=20
>        *  3.8 HELO_DYNAMIC_DHCP Relay HELO'd using suspicious hostname (DH=
>CP)
>        *  3.9 HELO_DYNAMIC_IPADDR Relay HELO'd using suspicious hostname (=
>IP addr
>        *      1)
>        * -2.3 BAYES_00 BODY: Bayesian spam probability is 0 to 1%
>        *      [score: 0.0000]
>X-Original-To: ...wonderland.linux.it
>Delivered-To: ...wonderland.linux.it
>Received: from attila.bofh.it (localhost [127.0.0.1])
>        by wonderland.linux.it (Postfix) with ESMTP id 65F211C7C7
>        for <...wonderland.linux.it>; Mon,  7 Nov 2005 10:44:17 +0100 (CET)
>Received: from picard.linux.it (picard.linux.it [IPv6:2001:1418:10:5::2])
>        (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
>        (No client certificate requested)
>        by attila.bofh.it (Postfix) with ESMTP id C099A5F7AA
>        for <...wonderland.linux.it>; Mon,  7 Nov 2005 10:44:17 +0100 (CET)
>Received: from dsl-217-155-153-11.zen.co.uk (dsl-217-155-153-11.zen.co.uk [=
>217.155.153.11])
>        (using TLSv1 with cipher AES256-SHA (256/256 bits))
>        (No client certificate requested)
>        by picard.linux.it (Postfix) with ESMTP id 4D32F3F00
>        for <[EMAIL PROTECTED]>; Mon,  7 Nov 2005 10:44:16 +0100 (CET)
>Received: from phil by dsl-217-155-153-11.zen.co.uk with local (Exim 4.54)
>        id 1EZ3Xz-0002SP-MZ
>        for [EMAIL PROTECTED]; Mon, 07 Nov 2005 09:44:15 +0000
>
>--=20
>ciao,
>Marco
>
>--PEIAKu/WMn1b1Hv9
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