Date: Tue, 28 Sep 1999 18:17:33 -0700 (PDT) From: "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net> To: tlambert@primenet.com (Terry Lambert) Cc: brett@lariat.org (Brett Glass), ben@scientia.demon.co.uk, chat@FreeBSD.ORG Subject: Re: Filtering port 25 (was Re: On hub.freebsd.org refusing to Message-ID: <199909290117.SAA17869@gndrsh.dnsmgr.net> In-Reply-To: <199909282337.QAA14015@usr07.primenet.com> from Terry Lambert at "Sep 28, 1999 11:37:00 pm"
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> Brett Glass writes: > > At 10:25 PM 9/25/99 +0100, Ben Smithurst wrote: > > >Going further away from SMTP still, do you allow *any* traffic from > > >remote dial up hosts into your network? Do you allow any traffic from > > >your dial up hosts out of your network? If so, I'd like to know why you > > >think SMTP and HTTP deserve special treatment, > > > > In a word: spam. At least in the case of SMTP. > > What about HTTP? Asked and answered... in other email... > I guess the answer is "to filter Banner Ad downloads"? > > I guess next we will disallow lookups of domain names that might > violate community standards. You'd be ill to see what my DNS rules look like... well... maybe not... we have, not yet activated on a wide scale, but in test, rules that stop direct outbound DNS queries. They get redirected to our own root name server for purpose of performance improvements, and for catching any customers trying to poison someones broken named server. > > The only answer to SPAM is implementing technology that makes it > impossible, and that's not the RBL or the DUL, so long as there > exists one machine with a static IP, no RBL entry, and an open > relay, somewhere in the world. The only answer to SPAM is to make it financially un attractive. If you cut the revenues created by SPAM you can have 10 static IP's not on the RBL and 10,000 open relays. Though it would still be possible to SPAM they wouldn't bother as the ROI is negative... Cutting down the amount delivered goes a long way to making the ROI get smaller and smaller. -- Rod Grimes - KD7CAX - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the messagehelp
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