[ietf-dkim] Update of RFC4871 Appendix D. MUA Considerations (resent)

[Stephen Farrell]

Dave CROCKER wrote:
> I'd like to strongly encourage the working group to defer this change until the 
> -bis work.

Yep. With my chair hat on, I think such a change would be very
like starting in on the bis work (which we've yet to scope) and
we didn't include it in the consensus call. So I believe this is
one for later.

Stephen.