Re: Experiment #2 with multiple Reference headers (was References with multipl

In <[email protected]> "william(at)elan.net" <[email protected]> writes:

>On Mon, 17 Jan 2005, Charles Lindsey wrote:

>> I think that registry is intended for fields that agents might be expected
>> to recognize and act upon. I doubt any MUA is going to have a
>> built-in-recognition of any and all fields beginning with "Original-".
>> Surely they are intended for human consumption, in which case using
>> "X-Original-xxxxxx" would he just as good, and would break no rules or
>> regisries?

>Aren't trace fields like "Received:" intended for human consumption too? :)

ALL headers need to be readable by humans upon occasions. But some are not
really suitable for reading by other than humans.

>And in this case, while its primarily trace data for humans for debugging 
>it could potentially be used by MTAs, for example to detect complex mail 
>loop. Besides that some systems might choose to display "Original-Sender"
>or "Original-From" in MUA as well (on part with Sender, From, Resent-From,
>Resent-Sender when showing the entities involved in email transmission).

Well any header that is intended to be used by MTAs needs to be
standardized in its own right. What I am doubting is whether any MTA is
ever going to be programmed to take some generic action on Original-Foo:
headers for all possible values of "Foo".

>And its not exactly that it would "break" the registry rule, its just
>that currently there is no way to do it and I think that means we'd
>have to expand IANA header registry to allow to define certain set of
>headers with common prefix or to specifically reserve "prefix" for
>use with one type of headers (which are afterward specifically defined).
>That generally means either separate draft for IANA or expansion of 
>RFC3864 (but I really would prefer header prefix registry by on same page 
>at IANA as specific header names registry).

Well if you want to embark upon an enhancement to RFC3834, then I would
suggest some preliminary discussion with Graham Klyne.

-- 
Charles H. Lindsey ---------At Home, doing my own thing------------------------
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