Me:
[...] Is there a way for the sender to specify that this is not an
acceptable step (e.g. to say that he'd much rather fragment the data
himself if the MTA won't do that)?
Nathaniel:
This would suggest that, at a minimum, some sort of trace headers should
be included, no?
This doesn't address my (second) point: how to *prevent* unacceptable
conversions. Maybe more general: MIME needs a definition of what
conversions are acceptable.
--Guido van Rossum, CWI, Amsterdam <guido(_at_)cwi(_dot_)nl>
"Are all your pets called Eric?"