On Mon, Mar 03, 2003 at 09:28:41PM -0800, Michael Marking allegedly wrote:
An address with an added hashcash value might be
AAAHC01234567_joe(_at_)domain(_dot_)com
This could be deemed equivalent to adding the header
X-Hashcash: 01234567
to the body of the e-mail, where the "normal" recipient might simply be
joe(_at_)domain(_dot_)com(_dot_)
Of course, this is clumsier than changing the protocols, but it can be
made to work by simple modifications to existing software.
What about using esmtp-params?
Mail From: <joe(_at_)domain(_dot_)com> hashcash=01234567
It's codified in rfc2821.
Regards.
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