anonymous mailing lists

[Jeffrey A Nimmo]

On Fri, 28 Jun 1996 ichudov at algebra.com wrote:

> Then users of alpha.c2.org will have to install mail filters that
> automatically delete all incoming mail not intended to be read by them
> (they can't read such messages anyway).

How exactly would this be done? Since messages from alpha.c2.org
are conventionally encrypted, they don't contain key id's. 

Wouldn't that require every recipient to store his/her passphrase
and call pgp for every message to see if it could be decrypted? This in
and of itself would be a more serious security breach, not to mention an 
_enormous_ drain on site resources.