> 2) Cryptographic permission based email. This would entail generating a
> 'credit' that you give to a person you want to email you. He/she can
> perform a calculation with the credit and say the day/hour when the
> email will be sent. Your email client then checks for the key that
> calculation generates. Only the people you issue credits to can
> send you email. For this reason its no good for email where just
> anybody can send you something. For that you need (1) or you issue
> a few credits and post them on your freesite and hope they dont colide.
That's one way to do permission based e-mail. You can also do
cryptographically signed messages with a white list. It's simpler and will
in practice be about as effective and less of a pain to use. It's similar
to the way that private mailing lists stop spam except better because
addresses can't be spoofed as they can in normal e-mail.
You forgot
3) Human filtering of spam. Not relevant for e-mail, but relevant for
newsgroups and mailing lists. It works on normal moderated newsgroups
today.
_______________________________________________
Devl mailing list
[EMAIL PROTECTED]
http://lists.freenetproject.org/mailman/listinfo/devl
