>>>>> "AB" == Andrew Billinghurst <billinghurst@tpg.com.au> writes:
AB> I have been asked some questions about the mailing list header
AB> line Precedence: ... after having mail blocked by ISPs for
AB> use of the extension Precedence: junk and Precedence: bulk,
AB> both of which I understand are very appropriate for mailing
AB> lists.
AB> Now I can find brief reference to their use in the new
AB> Sendmail book BUT I am unable to find any RFC for their use
AB> from first principles or other places where I can read about
AB> these header lines in depth.
AB> Anyone got any pointers?
The only one I'm aware of is a mention in RFC 2076, which says:
3.9 Quality information
Sometimes used as a priority Precedence: Non-standard,
value which can influence controversial,
transmission speed and delivery. discouraged.
Common values are "bulk" and
"first-class". Other uses is to
control automatic replies and to
control return-of-content
facilities, and to stop mailing
list loops.
This RFC was written in 1997 and I'd say by now this header is a
little less of at least the "controversial" and "discouraged" tags.
Seems pretty common for mailing list managers, and darn near required
for vacation programs. :)
-Barry
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