Date: Thu, 19 Aug 2010 09:23:34 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Jeff Laine <wtf.jlaine@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: freebsd.org maillist mx discard policy Message-ID: <4C6CEA06.9020200@infracaninophile.co.uk> In-Reply-To: <4C6CD53B.3070304@gmail.com> References: <4C6CD53B.3070304@gmail.com>
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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
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