I have noticed that the threading on our archive does not work, looking through the Mailman Faq/Archive, I have learned that this is typically 
caused by the In-Reply-To not being supported via the Mail Client.  Looking at the headers from our Mailman installation, I have confirmed that 
In-Reply-To is in fact missing.

Looking at other Mailman list posts, I have found that the In-Reply-To seems to grab its value from the references:
In-Reply-To: <1067854896.5a3ce47640987@toaster.best-off.org>
References: <1067854896.5a3ce47640987@toaster.best-off.org>

It doesnt seem that I have the references header either.  Any more information on how this all works would be greatly appreciated.

Thanks


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