IETF SMTP Working Group Proposal at smtpng.org
Brad Knowles
brad.knowles at skynet.be
Thu Aug 22 20:45:06 UTC 2002
At 7:20 PM -0500 2002/08/21, J.A. Terranson wrote:
> Presenting a computationally difficult problem to a connecting MTA
> moves the requirement for the CPU power to the sender while keeping
> the recipient site unfettered. Let's face it, the spam problem is
> merely one of cost shifting from sender to reciever, and this
> proposal shifts the load back. Any site that wishes to maintain
> the current system of email subsidies to the sender domain need
> only provide a computationally simple token.
Now this is more plausible. You'd still need something akin to a
PKI to distribute the computationally simple tokens, and you'd need a
way to easily revoke them. But if this was implemented by default in
the standard MTAs, you would go from hundreds or thousands of message
deliveries per minute to five or more minutes per un-authenticated
message delivery.
This is something that might be worth discussing in the
appropriate forums, such as the SMTP-related working groups of the
IETF.
--
Brad Knowles, <brad.knowles at skynet.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---(+++)* z(+++)
More information about the NANOG
mailing list