Re: [Asrg] C/R Framework

Yakov Shafranovich <research@solidmatrix.com> Thu, 15 May 2003 05:25 UTC

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To: asrg@ietf.org
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: Re: [Asrg] C/R Framework
In-Reply-To: <MBEKIIAKLDHKMLNFJODBMEPDFCAA.eric@purespeed.com>
References: <MBEKIIAKLDHKMLNFJODBIEPBFCAA.eric@purespeed.com>
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Date: Thu, 15 May 2003 01:22:32 -0400

Just wanted to mention a few statistical facts I got from someone over at 
MailCircuit (they have been running a C/R system for sometime):

1. Server loads are increased by almost 50% when the verification system is 
implemented.
2. Number of spammers that have been reported verifying themselves has only 
been 4 in the past 2 years.
3. We weed out approximately 12% of spammers thru reverse DNS.

I think the first factor would be a major issue with all C/R systems and is 
something we should take into account.

At 10:23 PM 5/14/2003 -0400, Eric Dean wrote:


>Attached, you'll find a proposed framework I have put together for a C/R
>discussion.  Please excuse the formating..I'll groff it soon..assuming it
>lives.
>
>I have attempted to capture some of the key areas and concerns that have
>been discussed over the past couple of weeks as well as incorporate some of
>my own ideas.  My intent is to throw something down on the table that's at
>least wrong and allow for an exchange of ideas regarding how to proceed if
>at all.

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