As Damon stated in his first and second post on this topic, this is not
challenge-response. It is simply address verification. If the address does
not exist, a 550 error is given.
-----Original Message-----
From: Brad Knowles [mailto:brad(_dot_)knowles(_at_)skynet(_dot_)be]
Sent: Monday, August 18, 2003 4:29 PM
To: Sauer, Damon
Cc: 'Tom Thomson'; 'Terry Sullivan'; 'asrg(_at_)ietf(_dot_)org'
Subject: RE: [Asrg] 2.a.1 Analysis of Actual Spam Data -
Experimental Desi gn
At 2:32 PM -0400 2003/08/18, Sauer, Damon wrote:
Just an FYI - My ENTIRE mail volume dropped from an
average of 50M a
month to 20M a month, with the same percentage being
blocked at the
content filters, after implementing address checking (550
given) at
the connection.
Keep in mind that there are those of us who simply refuse to
communicate with anyone that uses a C-R type system.
So, what's your loss in legitimate volume? Do you know
how many
people might have had real e-mail to send you, but decided not to
bother?
--
Brad Knowles, <brad(_dot_)knowles(_at_)skynet(_dot_)be>
"They that can give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.
GCS/IT d+(-) s:+(++)>: a C++(+++)$ UMBSHI++++$ P+>++ L+
!E-(---) W+++(--) N+
!w--- O- M++ V PS++(+++) PE- Y+(++) PGP>+++ t+(+++) 5++(+++)
X++(+++) R+(+++)
tv+(+++) b+(++++) DI+(++++) D+(++) G+(++++) e++>++++ h--- r---(+++)*
tv+z(+++)
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