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Re: Re: [SPF Classic] Policy best practices should be kept out

2004-10-07 07:42:58
In 
<Pine(_dot_)LNX(_dot_)4(_dot_)60(_dot_)0410071536290(_dot_)10769(_at_)hermes-1(_dot_)csi(_dot_)cam(_dot_)ac(_dot_)uk>
 Tony Finch <dot(_at_)dotat(_dot_)at> writes:

On Thu, 7 Oct 2004, wayne wrote:

I don't know where Rand Wacker got the 20% false-postive rate for SPF
fail, but it doesn't match any of the data I've seen.  Rand appears to
pull these numbers out of thin air.

He got them from AOL:

http://www.imc.org/ietf-mailsig/mail-archive/msg00284.html

Ok, so Rand Wacker can't read.

Carl didn't say that SPF had a 20% false-positive rate.  He said that
80% of the email that AOL receives is only one hop and would get a
PASS on an SPF or SenderID check.  That's a HUGE difference.


-wayne


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