> 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
