--On Friday, 29 June, 2001 09:02 -0700 "Paul Hoffman / IMC"
<phoffman(_at_)imc(_dot_)org> wrote:
Steve, we'll forgive you for not being an email expert. If you
were one, you would know that this topic, and half a dozen of
related meta-topics, have been beaten to death in the
(finally dead!) DRUMS WG, and on the ietf-822 mailing list in
the past six or seven years. A summary is that some
implementations prefer to be strictly standards-compliant but
piss off their users by not doing enough, while others choose
to do things the users want even though it doesn't go
strictly by the standards. In this case, there are
non-standard headers in common use that give valuable
heuristics to programs, and no standard ones that give the
same information. Many companies, apparently including
Microsoft, use that non-standard information.
Paul, while I generally agree with your description of the
problem, we _do_ have a standard in this case. RFC 2919
specifies some list-specific special headers. From episodic
examinations of messages arriving here from various lists, it
has gotten reasonably well implemented, almost certainly enough
so to promote it to Draft Standard if someone does the work in
the next few months. And nothing prevents a receiving MTA from
observing the presence of those fields and using that
information to suppress vacation/ out-of-office messages even
if, for historical reasons, they also consider Precedence fields
(or whatever).
john