Re: The introduction problem, was Thinking outside the box

> How about simple end-to-end authentication?

We already have PGP and S/MIME, both fairly widely implemented.

This replaces the spam problem with the introduction problem, when you get 
mail from someone who's not on your whitelist or blacklist, how do you 
decide whether to accept it?

History suggests that this problem is, if anything, more difficult than 
the spam problem.

Regards,
John Levine, [email protected], Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly