Date: Tue, 8 Jun 2004 08:36:54 -0700 From: Bill Campbell <freebsd@celestial.com> To: freebsd-questions@freebsd.org Subject: Re: ISPs blocking SMTP connections from dynamic IP address space Message-ID: <20040608153654.GB96370@alexis.mi.celestial.com> In-Reply-To: <20040608055211.GA54386@alexis.mi.celestial.com> 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>
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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.
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