[Asrg] Meta channel, not bounces

[Chris Lewis]

David Wilson wrote:

> However, what I have been saying is that rejecting using 5xx will
> generate a bounce if the reject is sent as a response to an intermediate
> MTA.

And what I've been saying is that this is an insignificant issue in reality.

"Intermediate" MTAs, in the sense of MTAs _other_ than the sender's or
recipient's perimeter/internal servers are insignificant in the scheme
of things.