From owner-freebsd-questions Fri Feb 16 20:53: 2 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mobile.hub.org (SHW39-29.accesscable.net [24.138.39.29]) by hub.freebsd.org (Postfix) with ESMTP id 92A5237B503 for ; Fri, 16 Feb 2001 20:52:58 -0800 (PST) Received: from localhost (scrappy@localhost) by mobile.hub.org (8.11.1/8.11.1) with ESMTP id f1H4qIR85729; Sat, 17 Feb 2001 00:52:28 -0400 (AST) (envelope-from scrappy@hub.org) X-Authentication-Warning: mobile.hub.org: scrappy owned process doing -bs Date: Sat, 17 Feb 2001 00:52:18 -0400 (AST) From: The Hermit Hacker To: Cc: , Subject: Re: simple idea to rid the world of most spam In-Reply-To: <28130.982383466@euclid.cs.niu.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG actually, what I'd like to know how to implement, if possible, is a filter in sendmail that allows for the use of ident to verify the user sending the email exists ... basically, if I can't reply to it, I don't want to receive it ... On Fri, 16 Feb 2001, Neil W Rickert wrote: > ken@mui.net wrote: > > >Ok all, here's something that has been bugging me for months. It's > >a very very simple idea, but I don't have the knowledge to do this: > > >Have you ever noticed how spam seems to come in the same > >order and how there's a ton of incorrect email addresses that is > >sent? > > This sometimes happens. > > >Why can't some kind of email filter be set up that works like this? > > >incorrect email sent to account A-----> turn flag on > >2nd incorrect email sent to account B ---------> turn 2nd flag on > >if 2 flags, then refuse ALL email sent from that account, place that > >name in the ban list. > > >The chances of someone sending email to 2 accounts that never > >existed = 99% chance that person is sending spam. > > >I've already talked to some people till I'm blue in the face. I'm > >certainly not smart enough to code it, but I'm hoping someone smart > >out there does this ... > > The important questions: > > Will this be reliable? That is, will it mainly stop spam, and not > have much effect on non-spam? > > Will this stop enough spam to be worth the trouble of implementing > it? > > Will it be easy to implement? > > Will spammers be easily able to change their behavior to bypass > this spam stopper? > > Will system administrators be willing to use this option? > > My personal assessment is that this is not worth doing. But perhaps > some of my colleagues will have different ideas. > > In any case, thank you for sending us the suggestion. > > -NWR > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message