On Mon, Feb 23, 2009 at 5:43 PM, John Levine <johnl(_at_)taugh(_dot_)com> wrote:
The whole point of postage is to apply
global limits to the number of messages that someone can send, which
means that all those parallel deliveries have to funnel requests to a
limited number of banks/postoffices/whatever to find out whether the
senders have any mail-fu left.
Now we're getting somewhere. I see the whole point of postage as a
mechanism for the recipient to monetize their attention. And since
there is money involved, suddenly substantially complex machine loads
can be afforded, as the transaction costs can be a small fraction of
the cost of someone's restricted attention. The purchase of
additional mail-fu as required will be a cost borne by the senders,
who will aggregate it at various levels opportunisticly depending on
reality. The first step is to have some recipients demand to be paid
for delivery to them.
An interesting proposal is
http://wiki.qpsmtpd.org/plugins:spam:autowhitelist_captcha
although it has the obvious problem of being a c/r system rather than
issuing smtp rejection codes referring to an http address for the
authen piece.
_______________________________________________
Asrg mailing list
Asrg(_at_)irtf(_dot_)org
http://www.irtf.org/mailman/listinfo/asrg