[MM3-users] Re: Message IDs

Mark Sapiro writes:

Note also that Mailman core communicates with archivers to determine what goes in the Archived-At: header and this value is usually based on the Message-ID:. Changing the Message-ID: could possibly render that value incorrect.

I forgot about that. MTAs allow existing Message-IDs through though, so Mailman could generate that outgoing Message-ID, add it to the the message, and put that in the Message ID hash.

I'm obviously not in favor of doing that, though.