[73844] in North American Network Operators' Group
Re: Spammers Skirt IP Authentication Attempts
daemon@ATHENA.MIT.EDU (Paul Jakma)
Mon Sep 6 13:48:49 2004
Date: Mon, 6 Sep 2004 18:45:00 +0100 (IST)
From: Paul Jakma <paul@clubi.ie>
To: Peter Corlett <abuse@cabal.org.uk>
Cc: nanog@nanog.org
In-Reply-To: <chhjot$etp$1@dopiaza.cabal.org.uk>
Errors-To: owner-nanog-outgoing@merit.edu
On Mon, 6 Sep 2004, Peter Corlett wrote:
> I'm an advocate of SPF, but not because it's the magic bullet that
> stops spam. It does however allow innocent domains to say "no, I
> didn't send that" and thus avoid the double-bounced backwash from a
> spammer forging their domain as the sender.
Envelope "cookie" schemes on outbound email, like SRS, can achieve
that, far better (*you* know whether the bounce is legit, rather than
relying on the bouncer to do the checking) and without the collateral
damage of SPF.
regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
Fortune:
The American Dental Association announced today that most plaque tends
to form on teeth around 4:00 PM in the afternoon.
Film at 11:00.
