X.400
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... gateway behavior for MIME types that
have no X.400 equivalents, and matter transport is simply another
such untranslatable type.
...
...
However, real-world X.400 gateways might be considered to
significantly increase the hazard that mail containing a human being
will be rejected with a message so cryptic that the recipient deletes ...
... transport be explicitly marked "for further study" in the next
generation of the X.400 specification, X.400-1996. This will give
the community ample time to define a more complete specification for
...
... transport be explicitly marked "for further study" in the next
generation of the X.400 specification, X.400-1996. This will give
the community ample time to define a more complete specification for
matter transport ...
... the community ample time to define a more complete specification for
matter transport as part of X.400-2000, and possibly even a readily-
implementable specification as part of X.400-2004, although some will
...
... transport as part of X.400-2000, and possibly even a readily-
implementable specification as part of X.400-2004, although some will
no doubt argue that this would be too strong a break with tradition.
...