From owner-freebsd-isp Fri May 30 17:18:51 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id RAA17956 for isp-outgoing; Fri, 30 May 1997 17:18:51 -0700 (PDT) Received: from buffnet4.buffnet.net (buffnet4.buffnet.net [205.246.19.13]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id RAA17951 for ; Fri, 30 May 1997 17:18:45 -0700 (PDT) Received: from buffnet9.buffnet.net (buffnet9.buffnet.net [205.246.19.19]) by buffnet4.buffnet.net (8.7.5/8.7.3) with SMTP id UAA22945; Fri, 30 May 1997 20:19:00 -0400 (EDT) Received: from buffnet11.buffnet.net(205.246.19.55) by buffnet9.buffnet.net via smap (V2.0) id xma000547; Fri, 30 May 97 20:17:17 -0400 Date: Fri, 30 May 1997 20:18:29 -0400 (EDT) From: Steve To: "J.D. Falk" cc: Poul-Henning Kamp , isp@FreeBSD.ORG Subject: Re: stopping mailspam without tears... In-Reply-To: <19970530173150.45564@cybernothing.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-isp@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk I just used smap with the security patches that issue an SMTP 554 error as soon as the from site is identified as a spam only site. On Fri, 30 May 1997, J.D. Falk wrote: > That's a cool idea, but it still involves your accepting the > mail (takes up bandwidth, CPU) and storing it (disk.) > > Of course, I'm crazy enough to play with sendmail.cf. *grin* > Rumour has it that Eric Allman is planning to include some > anti-spam hacks in the next distribution; for those who are > impatient, most of 'em are already available at various > sites linked from http://spam.abuse.net/. > > If you're big on filtering, a combination of your idea, the > various check_* hacks, TCP wrappers or other firewalling, > and user-level Procmail should cut out a lot of spam; the > reason I suggest a combination is because no one filtering > method gets everything, and your script is perfect as a > last-ditch effort for anything that somehow got through. > > (Quick off-topic plug: the best way to stop spam is to stop > it at the source. http://www.cauce.org/ for more info. I'd > rather not get into a discussion of that here, though, 'cause > I'm already on lots of spam-related mailing lists.) > > ---------========== J.D. Falk =========--------- > | "There's something quite primeval about | > | squeezing half a dead goat until it bleats." | > | -- Howard "MadDog" Dickins | > ----========== http://www.cybernothing.org/jdfalk/home.html ==========---- >