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Re: [Asrg] Re: Washington Post: Earthlink to Deploy a Challenge-Response System for Fightin
On May 8, 2003 at 19:29 ca+asrg@esmtp.org (Claus Assmann) wrote:
> On Thu, May 08, 2003, Barry Shein wrote:
> >
> > Why not just give each person a different mail address (presumably
> > aliased to your one true address) and use the mbox:sender pair as the
> > "consent token". Trivially revoked, just alias it to /dev/null.
>
> Because that causes exponential explosion of addresses.
Well, "exponential explosion" is meant to be a scary phrase, right?
I don't think it's exponential by any means, besides that's only a
description of the curve between here and there, "there" being
wherever it plateaus. Unless you mean unboundedly exponential, but
that's not likely.
THE POINT IS (I'm not just giving you a hard time, trust me) that
that growth in addresses is a problem for spammers...it's a feature!
Who else has to manage them all except in the most trivial way, for
example one-to-one mappings of who to really deliver this to.
But my math tells me that a log base 2 look up says I can find one
address in a list of a trillion in about 40 probes, worst case.
But the spammer has to try all trillion to find me, worst case.
> I'm trying
> to use it, but it causes problems as soon as I send mail to a group
> of people (esp. when the members of those groups change).
I believe you, but isn't that just a weakness in the MUA software not
accomodating this approach? SMOP (Simple Matter Of Programming.)
Granted that's a practical consideration, but one should try to be
clear whether they're making a pragmatic or theoretical objection.
--
-Barry Shein
Software Tool & Die | bzs@TheWorld.com | http://www.TheWorld.com
Purveyors to the Trade | Voice: 617-739-0202 | Login: 617-739-WRLD
The World | Public Access Internet | Since 1989 *oo*
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