From owner-freebsd-questions@FreeBSD.ORG Tue Jun 8 15:36:55 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 32E2616A4CE for ; Tue, 8 Jun 2004 15:36:55 +0000 (GMT) Received: from mail.mi.celestial.com (dagney.celestial.com [192.136.111.7]) by mx1.FreeBSD.org (Postfix) with ESMTP id E832D43D4C for ; Tue, 8 Jun 2004 15:36:54 +0000 (GMT) (envelope-from bill@celestial.com) Received: by mail.mi.celestial.com (Postfix, from userid 203) id 9F56B11EA4E; Tue, 8 Jun 2004 08:36:54 -0700 (PDT) Date: Tue, 8 Jun 2004 08:36:54 -0700 From: Bill Campbell To: freebsd-questions@freebsd.org Message-ID: <20040608153654.GB96370@alexis.mi.celestial.com> Mail-Followup-To: freebsd-questions@freebsd.org References: <20040607085739.352eba17.wmoran@potentialtech.com> <200406071511.i57FB3Ol073942@adsl-68-76-19-75.dsl.klmzmi.ameritech.net> <20040607112911.476b0578.wmoran@potentialtech.com> <200406072214.47057.jaymo@cromagnon.cullmail.com> <20040608055211.GA54386@alexis.mi.celestial.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040608055211.GA54386@alexis.mi.celestial.com> User-Agent: Mutt/1.4.2.1i Subject: Re: ISPs blocking SMTP connections from dynamic IP address space X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd@celestial.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Jun 2004 15:36:55 -0000 On Mon, Jun 07, 2004, Bill Campbell wrote: >On Mon, Jun 07, 2004, Jay Moore wrote: >>On Monday 07 June 2004 10:29 am, Bill Moran wrote: >> >>> > Just make sure they are truly dynamic ips. Many people block ips >>> > identified as "DSL" connections. Those are not necessarily dynamic ip >>> > based. >> >>The easiest way I've found to learn if your IP address is "listed", and who is >>listing it is: >> >>http://www.dnsstuff.com/ > >Telnet to port 25 of any of AOL's MX servers. You will get an >immediate rejection notice if they think you're in residential >DSL space: > mailin-01.mx.aol.com > mailin-02.mx.aol.com > mailin-03.mx.aol.com > mailin-04.mx.aol.com There is an excellent article in The Register on this very topic: http://www.theregister.co.uk/2004/06/04/trojan_spam_study/ Bill -- INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software LLC UUCP: camco!bill PO Box 820; 6641 E. Mercer Way FAX: (206) 232-9186 Mercer Island, WA 98040-0820; (206) 236-1676 URL: http://www.celestial.com/ ``It is better to die on your feet than to live on your knees!'' -- Emiliano Zapata.