threading broken in g.e.gnus (was: Can't send emails to this list via gmane?)

[Tim Howe <vsync@quadium.net>]

I'm noticing many of the threads in here are completely broken.  It
seems the Message-IDs are getting replaced by Mailman ones so References
and In-Reply-To headers are left dangling.  So Gnus falls back to the
"same-subject-guessing" behavior.

    http://i.imgur.com/xgxuZT0.png

Is this intentional?

-- 
Tim Howe
http://quadium.net/~vsync/

The lack of interest, the disdain for history is what makes computing
not-quite-a-field.  [...]  They have no idea where [their culture came
from] and the Internet was done so well that most people think of it
as a natural resource like the Pacific Ocean, rather than something
that was man-made.  When was the last time a technology with a scale
like that was so error-free?  The Web, in comparison, is a joke.  The
Web was done by amateurs.
        -- Alan Kay