On Fri, 12 Apr 2002, Matthew Byng-Maddick wrote:
> It's not implemented in any modern MTA. It hasn't been implemented like that
> for around 10-12 years.
And RFC 821 has been obsoleted by RFC 2821 (though this obsolete
mechanism is still present therein).
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.