All, I use KMail, and the "Message > Reply Special > Reply to Mailing-list" function (shortcut "l" (ell)) works nicely for this list and many others to which I'm subscribed. However, for a couple of lists, the created reply contains the quoted message material, but the "To:" field is unpopulated (requiring some extra keystrokes in order to reply to just those lists). Could someone tell me (or point to where it's documented) which particular line or lines from the message header are being used by KMail (and presumably other mail readers) to create a Reply to Mailing-list? A friend is hosting one of the broken lists, and I'd like to let her know how to fix hers. Of course, she's using Yahoo-lists, so she might not have that kind of control available to her, but she could still submit a request to the masters at Yahoo... I've visually compared headers and I do see plenty of differences, it's just that I'm not sure which differences are important to this particular function. (Of course I can supply a sample "broken" header if anyone cares to see.) Thanks, Kevin