Re: [exim] Generating hashcash for outgoing mail?

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Auteur: Tony Finch
Datum:  
Aan: Marc Sherman
CC: exim-users
Onderwerp: Re: [exim] Generating hashcash for outgoing mail?
On Mon, 7 Feb 2005, Marc Sherman wrote:

> Has anyone ever integrated hashcash stamp generation into exim? I've hacked a
> bit, but can't seem to figure out a way to integrate it that seems clean to
> me.


Hashcash is pointless. See the second paragraph on Richard Clayton's page
about the paper he wrote with Ben Laurie: "Proof of work prooves not to
work". Their result is intuitively obvious if you handwave about zombie
farms, but they back it up with real-world numbers from Demon Internet.

http://www.cl.cam.ac.uk/~rnc1/

Tony.
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