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Re: [Asrg] Statistical Analysis shows SPF should work Pretty Well

Yakov Shafranovich <research@solidmatrix.com> Fri, 13 June 2003 07:21 UTC

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To: Kee Hinckley <nazgul@somewhere.com>, mengwong@dumbo.pobox.com
From: Yakov Shafranovich <research@solidmatrix.com>
Subject: Re: [Asrg] Statistical Analysis shows SPF should work Pretty Well
Cc: asrg@ietf.org
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Date: Fri, 13 Jun 2003 01:44:14 -0400

At 11:06 PM 6/12/2003 -0400, Kee Hinckley wrote:

>At 4:24 PM -0400 6/12/03, Meng Weng Wong wrote:
>>Conclusion 2: Client IPs whose PTR do not match their sender domains are
>>more likely to be spam than not.
>>
>>But that means a scheme like SPF/DMP/RMX should work nicely.
>
>As would turning off your mail server.
>How many false positives would such a scheme result in?
>--
>Kee Hinckley
>http://www.messagefire.com/         Anti-Spam Service for your POP Account
>http://commons.somewhere.com/buzz/  Writings on Technology and Society
>
>I'm not sure which upsets me more: that people are so unwilling to accept
>responsibility for their own actions, or that they are so eager to regulate
>everyone else's.

Meng,

Do you have some data on false positives?  

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