This thread is trying to redefine or redesign SMTP's use of TLS. It
should probably be happening on the ietf-apps-tls@imc.org list
instead of the main IETF mailing list. That's where the implementers
are, and that's where the implementers of most of the foo-over-TLS
protocols are. They too should be hearing this discussion, since much
of it applies to many protocols, not just SMTP.
--Paul Hoffman, Director
--Internet Mail Consortium