From owner-freebsd-questions@FreeBSD.ORG Thu Aug 19 08:23:55 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 640911065693 for ; Thu, 19 Aug 2010 08:23:55 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (smtp6.infracaninophile.co.uk [IPv6:2001:8b0:151:1:3fd3:cd67:fafa:3d78]) by mx1.freebsd.org (Postfix) with ESMTP id C24E18FC0A for ; Thu, 19 Aug 2010 08:23:54 +0000 (UTC) Received: from russet.local (reflex.squiz.co.uk [83.217.109.164]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id o7J8NhsS008580 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Thu, 19 Aug 2010 09:23:50 +0100 (BST) (envelope-from m.seaman@infracaninophile.co.uk) X-Authentication-Warning: lucid-nonsense.infracaninophile.co.uk: Host reflex.squiz.co.uk [83.217.109.164] claimed to be russet.local Message-ID: <4C6CEA06.9020200@infracaninophile.co.uk> Date: Thu, 19 Aug 2010 09:23:34 +0100 From: Matthew Seaman User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: Jeff Laine References: <4C6CD53B.3070304@gmail.com> In-Reply-To: <4C6CD53B.3070304@gmail.com> X-Enigmail-Version: 1.1.1 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigB70E3DB79C25F390495875DC" X-Virus-Scanned: clamav-milter 0.96.2 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=1.6 required=5.0 tests=BAYES_50,DKIM_ADSP_ALL, SPF_FAIL autolearn=no version=3.3.1 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on lucid-nonsense.infracaninophile.co.uk Cc: "freebsd-questions@freebsd.org" Subject: Re: freebsd.org maillist mx discard policy X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Aug 2010 08:23:55 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigB70E3DB79C25F390495875DC Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 19/08/2010 07:54, Jeff Laine wrote: > So, the question is: do the freebsd.org maillist servers follow SPF > records or PTR record is mandatory? >=20 The PTR is mandatory. The vast majority of SMTP senders without proper PTR records are zombie machines spreading spam. Anyone running a real mail system should be capable of arranging for a correct PTR in the DNS -- if they aren't then they have no business at the controls of a MTA. As far as I know, the FreeBSD.org mailers don't pay much attention to SPF -- generally the accepted practice seems to be to use SPF as part of computing Spam scores, but not to make accept/reject decisions solely based on SPF. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enigB70E3DB79C25F390495875DC Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkxs6g0ACgkQ8Mjk52CukIw7YQCeJK2vJqRJQh0V5W+ugTU99oDm BMYAoJJ/tEl4nIbLeKzXULX07JMeVxV+ =b6nX -----END PGP SIGNATURE----- --------------enigB70E3DB79C25F390495875DC--