I believe this was mentioned before
(https://www1.ietf.org/mail-archive/working-groups/asrg/current/msg00137.html):
>From: Clifton Royston <cliftonr(_at_)lava(_dot_)net>
>Date: Tue, 4 Mar 2003 17:32:46 -0500
>
>"Would anyone consider it worthwhile for this group to put some focus
>on making existing email content analysis/filter tools (in particular
>anti-spam software) more interoperable?"
One of the replies
(https://www1.ietf.org/mail-archive/working-groups/asrg/current/msg00149.html)
suggested the following:
>From: "Bob Wyman" <bob(_at_)wyman(_dot_)us>
>Date: Tue, 4 Mar 2003 17:32:46 -0500
>
>The charter calls for both a taxonomy of existing methods as
>well as an evaluation of those methods. It would seem that both efforts
>would be served by documentation of the various extended headers in use
>today. Collecting information about the headers used today would also be
>critical to any effort such as the one that you propose to make tools
>that rely on header extensions more interoperable.
>
>Can you document one or more of the sets of extended headers
>used today? If so, I'd love to see it.
>bob wyman
>
Is anyone in the process of collecting this information? Is it worthwhile?
Yakov
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Yakov Shafranovich / <research(_at_)solidmatrix(_dot_)com>
SolidMatrix Research, a division of SolidMatrix Technologies, Inc.
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"One who watches the wind will never sow, and one who keeps his eyes on
the clouds will never reap" (Ecclesiastes 11:4)
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