Re: limited threading in web interface to mailman/pipermail (confusing, when viewed alongside truer threading in Nabble)

Posted by Hugo <Nabble> on Oct 19, 2009; 7:05pm
URL: https://support.nabble.com/limited-threading-in-web-interface-to-mailman-pipermail-confusing-when-viewed-alongside-truer-thread-tp3849241p3851176.html

Graham Perrin wrote

a) the user replied to an unrelated message and changed the subject line before posting

That's correct. Nabble uses the Message-ID header of emails to find their parents (with the help of In-Reply-To header). So this can really be the cause of wrong threading. We have code to rethread mailing list archives, but if the problem is just a few messages, it is better to move them by hand.