17 Dec
2003
17 Dec
'03
11:17 p.m.
Simple enough to solve: 1. all E-mail messages must be crypto-signed by the author's private key. 2. the list exploder verifies the key against the list membership, and only forwards the message to the distribution list if the signature matches a member of the list. 3. New members are added through invitation or introduction (hand wave). Q.E.D. There are, of course, some technology integration and ease-of-use issues here, given that no commonly used commercial E-mail software will do #1. Erik