Hi there,

A while back I introduced an experimental draft about DKIM signature generation that's sensitive to MIME structure. I'm planning to revisit and maybe even implement this to get some experimentation going. It would help guide the design work if I knew this:

How does, or how would, Mailman add a footer to a MIME message? My guess is that it would make a multipart that contains the original message (message/rfc822) as one part and the footer as a text/plain in a second part, but that's purely a guess. Equally important: What would it do to sign a message that's not MIME to begin with? Could it be compelled to turn it into a MIME message, perhaps treating the original as a single-part text/plain message and doing the same wrapping I described?

Thanks, -MSK