El jueves, 6 novi, 2003, a las 18:27 Europe/Madrid, Erik Abele escribió:
On 06.11.2003, at 00:46, Santiago Gala wrote:
Actually, I am exploring the concept, I expected some expert to come out and say "Actually, project XYZ in sourceforge does a variant of this, only much better" :-)
fwiw: there is a nice concept called Tripoli, see http://www.pfir.org/tripoli-overview
Classified for reading until I finish a proposal ;-)
A nice scheme against spam, I read about some time ago, was about requiring the email sender to compute a computationally difficult challenge before the email was accepted, for uknown/untrusted senders, something that could take 1 sec CPU time for a reasonable processor. The idea was raising the cost of sending spam and putting it where it belongs. Trusted senders, like the ASF, for instance, would not be required to do it.
So, a spammer would have to pay like 1 TeraInstruction per message, and a reasonable PC would send no more than say 3000 spams per hour. This, BTW, would make desirable to send signed messages for bulk senders, since those would be much "cheaper" to send.
Regards,
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