Mark Breen
marklbreen at gmail.com
Sat Feb 6 05:35:55 CST 2010
Hello Gustav, that is very interesting, how do you manage or control the Sender Policy Framework<http://en.wikipedia.org/wiki/Sender_Policy_Framework> Is that something the you enable and maintain locally on your smtp server, or do you mange it from the domain registry company? Thanks Mark On 5 February 2010 10:00, Gustav Brock <Gustav at cactus.dk> wrote: > Hi Mark > > GMail is one service that is relying on the existence of a spf record to > look up to detect possible spam. > We did this test a few days ago with two e-mails which will demonstrate. > One went directly to the spam folder, the other did not. > gustav at cactusdata.dk is a GMail account of ours. > > This one was send from an in-house server at a client with a fixed-IP > address ADSL line via the SMTP service of Windows Server 2000. At that > moment, however, smtp.prconnect.dk was not recorded in the DNS; it is now: > > <spamyes> > Delivered-To: gustav at cactusdata.dk > Received: by 10.90.104.1 with SMTP id b1cs233630agc; > Wed, 3 Feb 2010 04:57:45 -0800 (PST) > Received: by 10.223.4.22 with SMTP id 22mr7664289fap.97.1265201864702; > Wed, 03 Feb 2010 04:57:44 -0800 (PST) > Return-Path: <admin at prconnect.dk> > Received: from smtp.prconnect.dk ( > cpe.atm2-0-10585.bynxx13.customer.tele.dk [80.164.141.170]) > by mx.google.com with ESMTP id > 7si1489834fxm.43.2010.02.03.04.57.44; > Wed, 03 Feb 2010 04:57:44 -0800 (PST) > Received-SPF: neutral (google.com: 80.164.141.170 is neither permitted nor > denied by best guess record for domain of admin at prconnect.dk) > client-ip=80.164.141.170; > Authentication-Results: mx.google.com; spf=neutral (google.com: > 80.164.141.170 is neither permitted nor denied by best guess record for > domain of admin at prconnect.dk) smtp.mail=admin at prconnect.dk > Received: from server ([192.168.1.1]) by smtp.prconnect.dk with Microsoft > SMTPSVC(5.0.2195.6713); > Wed, 3 Feb 2010 13:57:43 +0100 > Message-ID: <000b01caa4d0$79910360$fa01a8c0 at prconnect.dk> > From: "Admin" <admin at prconnect.dk> > To: <gustav at cactusdata.dk> > Subject: Test fra PR Connect > Date: Wed, 3 Feb 2010 12:25:47 +0100 > MIME-Version: 1.0 > Content-Type: multipart/alternative; > boundary="----=_NextPart_000_0006_01CAA4CC.03A689D0" > X-Priority: 3 > X-MSMail-Priority: Normal > X-Mailer: Microsoft Outlook Express 6.00.2800.1983 > X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1983 > Return-Path: admin at prconnect.dk > X-OriginalArrivalTime: 03 Feb 2010 12:57:43.0334 (UTC) > FILETIME=[79937460:01CAA4D0] > </spamyes> > > This one was sent from our in-house GroupWise server: > > <spamnot> > Delivered-To: gustav at cactusdata.dk > Received: by 10.90.104.1 with SMTP id b1cs237337agc; > Wed, 3 Feb 2010 06:18:35 -0800 (PST) > Received: by 10.142.7.25 with SMTP id 25mr161191wfg.141.1265206714605; > Wed, 03 Feb 2010 06:18:34 -0800 (PST) > Return-Path: <Gustav at cactus.dk> > Received: from cactus.dk (mail.cactus.dk [213.150.48.58]) > by mx.google.com with ESMTP id > 17si16796170pzk.125.2010.02.03.06.18.33; > Wed, 03 Feb 2010 06:18:34 -0800 (PST) > Received-SPF: pass (google.com: domain of Gustav at cactus.dk designates > 213.150.48.58 as permitted sender) client-ip=213.150.48.58; > Authentication-Results: mx.google.com; spf=pass (google.com: domain of > Gustav at cactus.dk designates 213.150.48.58 as permitted sender) smtp.mail= > Gustav at cactus.dk > Received: from gwdom-MTA by cactus.dk > with Novell_GroupWise; Wed, 03 Feb 2010 15:18:32 +0100 > Message-Id: <sb6993c8.057 at cactus.dk> > X-Mailer: Novell GroupWise Internet Agent 6.5.4 > Date: Wed, 03 Feb 2010 15:18:03 +0100 > From: "Gustav Brock" <Gustav at cactus.dk> > To: <gustav at cactusdata.dk> > Subject: Cactus spf > Mime-Version: 1.0 > Content-Type: text/plain; charset=ISO-8859-1 > Content-Transfer-Encoding: base64 > Content-Disposition: inline > </spamnot> > > So a missing spf record may be what causes trouble for your client. I know > there is some discussion about the spf record but I don't care that much as > it works for probably all of the public major web based mail hosts. > > In this example the spf record reads: > > "v=spf1 mx mx:smtp.prconnect.dk -all" > > /gustav > > > >>> marklbreen at gmail.com 05-02-2010 10:23 >>> > Hello All, > > I have a customer with six employees. They are a government linked > childcare related organisation. Their primary role in life is to dispense > funds to local pre-school child care businesses here in Ireland. > > They have been noticing that they often get told that their emails were in > the spam folder of their recipient. > > I did some tests yesterday sending from their email addresses to a few of > my > gmail accounts and all of their emails went to google's spam folder. > > Could they have gotton themselves onto a so called black list? > Do such things really exist and is it really so easy to get on one of these > lists? > I have to presume that if they exist and if you get on one, there is no > easy > way to get off such a list? > If so, what do you suggest? Register a similar domain name and cease use > of > the old domain name? > > Thanks for your suggestions and comments. > > Mark > > _______________________________________________ > dba-Tech mailing list > dba-Tech at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/dba-tech > Website: http://www.databaseadvisors.com >