Mailman-users writes:

Sorry to bother others...

Hey, y'all, don't hesitate to do this if it's the best way to find somebody. But you can also search it out yourself if you've kept any posts from them, because Mailman's own lists put it in "reply-to". Either a "reply all" (and clean up any undesired CCs) or check the headers in the "raw mail" (also called "original mail") to see it.

HTH somebody in a hurry someday.

Steve