ietf-nntp <0> and message IDs

[Russ Allbery]

I think we have consensus on eliminating the <0> wart and requiring that
all articles have message IDs (possibly assigned by the server if the
incoming message didn't have one).

If anyone disagrees that that's the consensus, please speak up now.
Otherwise, Clive, please go ahead and make those changes, and then we can
move on to making sure that the wording on requiring a message ID is okay.

-- 
Russ Allbery (rra at stanford.edu)             <http://www.eyrie.org/~eagle/>