On Wed, Jan 14, 2004 at 01:10:35PM -0600, Scott Raun wrote:
> I'm trying to track down info on the following mail headers - who may
> have defined them, how widely used they are, stuff like that.  The
> headers are:
> 
> Thread-Topic:
> Thread-Index:
> In-Reply-To:

In-Reply-To is defined in the RFCs -
http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2822.html -
and it supposed to be present in most replies.
I don't know about the others.

-- 
Jim Crumley                  |Twin Cities Linux Users Group Mailing List (TCLUG)
crumley at fields.space.umn.edu |Minneapolis/St. Paul, Minnesota 
Ruthless Debian Zealot       |http://www.mn-linux.org/ 
Never laugh at live dragons  |Dmitry's free,Jon's next? http://faircopyright.org

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