> >The Goals draft talks about the requirement to authenticate senders and
> Quack? You mean for Off-Ramps ?
> >What kind of security will be needed to actually provide this?
> It would depend on the type of off ramp, relay or redirection.
RFC2305 section 5 talks about a few mechanisms, but doesn't require
any specific mechanism (or even recommend one mechanism over another).
> >This also raises the question about how authentication is made in Simple
> >Mode Fax today?
> None... thought there has been discussion of gateway behavior this has
> generally been put on the back burner or deemed implementation specific.
There isn't anything specific to "simple mode fax", but there isn't
anything preventing someone from adding S/MIME or PGP-MIME or channel
security (IPSec, TLS, etc.) to their messages or to their mailers. The
intent of simple mode is to "ride along the wave" of email as email
aquires these features and the market decides which mechanisms are
"best" -- for example, which is better: S/MIME or PGP-MIME?? :-)