"D. J. Bernstein" <djb(_at_)cr(_dot_)yp(_dot_)to> writes:
Dan Kohn writes:
a UTF8HEADERS ESMTP extension
No! 8-bit support is not an option. 8-bit support is not something to be
negotiated. 8-bit support is _required_.
I agree. 8BITMIME has largely failed (strictly speaking, announcing
8BITMIME requires body rewrite features in mail relay software). We
should not introduce similar functionality, as an RFC for that will
be ignored, implemented incorrectly, or not implemented due to the
involved complexity.
Sorry to bother you with the facts, but the 8BITMIME requirement that
you're mindlessly imitating is flagrantly violated in practice by many
MTAs, including most versions of sendmail.
qmail announces 8BITMIME support without actually implementing it,
too. (This defect only affects mail relays, though.)