spf-discuss
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RE: Attacking Domain Keys

2004-11-29 18:56:55
On Mon, 29 Nov 2004, Seth Goodman wrote:

Crypto accelerators would obviously solve the problem.  As a hardware
engineer who works with DSP's, I would personally benefit from an expanded
market for such accelerators.  Designing them is both enjoyable and
profitable for me.  However, as an Internet citizen, I would not like to see
that become part of the price of admission for email.

I have no objection to DK as long as the domains in question also 
publish SPF.  There is no significant load to *publish* a DK key.
The extra work is only for verifying a DK key.  If I don't need
rfc2822 forgery protection, then I won't verify DK.  I must say
that if I *did* need 2822 checking, I prefer DK to senderID - since
all that work does provide significant confidence in the authenticity.

I think we should push SPF for DK people, explaining that SPF 
_enhances_the_performance_of_DK_ by rejecting 2821 forgeries before
SMTP DATA and before any RSA crypto need be done.

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.


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