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Just excude "obs" ? [was: Closing out all other issues in draft-klensin-2821bis}

2008-02-16 04:29:08

Various 2822upd details were modified in the last six weeks,
e.g., 2821bis now needs its own <dcontent> excluding "obs".

Maybe it's more straight forward if all 2822upd imports just
exclude "obs" constructs (same idea as in RFC.usefor-usefor).

With that strategy some of the proposed new <xyzSMTP> terms
might be unnecessary.  However this needs a MUST somewhere,
a good place could be where CTL is already noted as MUST NOT.

 Frank