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From "Chris Means" <cme...@intfar.com>
Subject RE: how hard is it to write a SMTP client?
Date Fri, 06 Jun 2003 17:08:44 GMT
Maybe an implementation of the Quota system, but in reverse would work well
here.

Instead of diskspace being reduced by email piling up...

A quota is paid for (cost computed by quantity and message size), and is
reduced for each message sent, and rejected once 0 is reached.

> -----Original Message-----
> From: Frank Herrmann [mailto:herrmann_frank@yahoo.com]
> Sent: Friday, June 06, 2003 6:24 AM
> To: James Developers List
> Subject: RE: how hard is it to write a SMTP client?
>
>
> Richard and Noel,
>
> --- "Noel J. Bergman" <noel@devtech.com> wrote:
> > Richard,
> > With respect to writing your own SMTP client, it is
> > simple for simple cases,
> > but the totality of SMTP isn't simple.
>
> Considering these facts about 1/2 year ago I chose
> James as an implementation basis for a very similiar
> project and found James very suitable. (which is a
> reliable solution capable of all those nice exception
> cases which I could never program myself) BTW. thanks
> to all james developers!
>
> >
> > However, I don't see why you can't use James for
> > your application.  What you
> > are proposing seems like a fairly straightforward
> > custom application of
>
> Understanding concepts of James ate up almost half of
> development time. :-)
>
> > James.  From what I read on your site, and from your
> > post, it is essentially
> > a variation on a TMDA (www.tmda.net/) scheme, but
> > requiring payment rather
> > than authentication.
> >
>
> The challenge-response-payment idea was IMHO first
> discussed in "Pricing via processing" (Cynthia Dwork,
> Moni Naor, 1991).
>
> You can find the paper here:
>
> http://www.wisdom.weizmann.ac.il/~naor/onpub.html
>
> TMDA is one implementation of that idea. At the moment
> the "beloved" company Microsoft is heavily researching
> in this field.
>
> URL:
>
> http://research.microsoft.com/research/sv/PennyBlack/
>
> However, my guess is next version of windows will
> contain this feature.
>
> Greetings,
> Frank
>
>
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