On 08 September 2005 17:53, Glynn Clements wrote:

Frederik Eaton wrote:

...

However, threading by "References", which RFC 2822 says SHOULD be possible, and which works on my other folders, doesn't work well on Haskell mailing lists. Presumably the issue is that there are a large number of Windows users with strange mail clients which don't insert "References" headers.

It isn't so much that there are a large number of such users, but that two of the core developers are among them (and are both employed by Microsoft, so RFC-conformance probably isn't an option).

Yes, this is partially our fault. When using Outlook through Exchange, the In-Reply-To header isn't generated at all. Outlook via SMTP works fine, though. I reported the bug several years ago, let's see if Office 12 fixes it :) Cheers, Simon