From owner-freebsd-questions@FreeBSD.ORG Thu Oct 16 16:59:18 2008 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 1BE821065694 for ; Thu, 16 Oct 2008 16:59:18 +0000 (UTC) (envelope-from eculp@casasponti.net) Received: from ns2.bafirst.com (72-12-2-19.static.networktel.net [72.12.2.19]) by mx1.freebsd.org (Postfix) with ESMTP id C17FF8FC25 for ; Thu, 16 Oct 2008 16:59:17 +0000 (UTC) (envelope-from eculp@casasponti.net) Received: from casasponti.net ([201.155.7.3]) by ns2.bafirst.com with esmtp; Thu, 16 Oct 2008 11:59:15 -0500 id 000D52E8.48F772E4.00001FDD Received: from localhost (localhost [127.0.0.1]) (uid 80) by casasponti.net with local; Thu, 16 Oct 2008 11:58:44 -0500 id 00130D04.48F772C4.0000D1AA Received: from dsl-189-190-8-164.prod-infinitum.com.mx (dsl-189-190-8-164.prod-infinitum.com.mx [189.190.8.164]) by intranet.casasponti.net (Horde Framework) with HTTP; Thu, 16 Oct 2008 11:58:44 -0500 Message-ID: <20081016115844.17qwm4xcs6jkg84oc@intranet.casasponti.net> Date: Thu, 16 Oct 2008 11:58:44 -0500 From: eculp@casasponti.net To: freebsd-questions@freebsd.org References: <20081016090102.17qwm4xcs6f4so8ok@intranet.casasponti.net> <20081016145255.GA12638@icarus.home.lan> <48F75A88.1000507@infracaninophile.co.uk> <20081016173807.64d0f24e@gumby.homeunix.com.> In-Reply-To: <20081016173807.64d0f24e@gumby.homeunix.com.> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable User-Agent: Internet Messaging Program (IMP) H3 (5.0-cvs) X-Remote-Browser: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.8.1.17) Gecko/20080925 Firefox/2.0.0.17 X-IMP-Server: 201.155.7.3 X-Originating-IP: 189.190.8.164 X-Originating-User: eculp@casasponti.net Subject: Re: I've just found a new and interesting spam source - legitimate bounce messages 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, 16 Oct 2008 16:59:18 -0000 RW escribi=F3: > On Thu, 16 Oct 2008 08:54:55 -0700 (PDT) > Luke Dean wrote: > >> >> >> On Thu, 16 Oct 2008, Matthew Seaman wrote: >> >> > Until the wonderful day that the entire internet abides by these >> > rules[*], use >> > of technologies like SPF and DKIM can discourage but not entirely >> > prevent the spammers from joe-jobbing you. >> >> I just started getting these bouncebacks en masse this week. >> My mail provider publishes SPF records. > > SPF increases the probability of spam being rejected at the smtp > level at MX servers, so my expectation would be that it would exacerbate > backscatter not improve it. > > Many people recommend SPF for backscatter, but I've yet to hear a cogent > argument for why it helps beyond the very optimistic hope that spammers > will check that their spam is spf compliant. I feel the same way and thanks for adding some humor to the situation. ed > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.or= g" >