Date: Thu, 16 Oct 1997 18:56:16 -0700 From: Don Lewis <Don.Lewis@tsc.tdk.com> To: chad@dcfinc.com, root@eyelab.psy.msu.edu (Gary Schrock) Cc: dkelly@hiwaay.net, freebsd-stable@FreeBSD.ORG Subject: Re: Anti-spam sendmail in 2.2.5? Message-ID: <199710170156.SAA27779@salsa.gv.tsc.tdk.com> In-Reply-To: "Chad R. Larson" <chad@freebie.dcfinc.com> "Re: Anti-spam sendmail in 2.2.5?" (Oct 15, 10:07pm)
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On Oct 15, 10:07pm, "Chad R. Larson" wrote: } Subject: Re: Anti-spam sendmail in 2.2.5? } Also under consideration is insisting on a HELO during the SMTP } handshake and doing a DNS lookup on that system. If they don't match, } you refuse the traffic. I'm pretty sure this isn't strictly legal according to the RFCs, and it will probably block some non-spam mail. That's not to say it's not effective against spam. --- Truck
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