if you start delivering, openbsd's spamd will not announce 8bitmime support.
but once you get patched through to the actual mail server, it will likely
announce 8bitmime support.
perhaps we should also just attempt to deliver 8bit email without 8bitmime
extension. probably better for users than not even trying to send the message.
perhaps in a non-strict mode.
named "traceauth" and "tracedata".
with this, you can (almost) enable trace logging without fear of logging
sensitive data or ddos'ing your log server.
the caveat is that the imap login command has already printed the line as
regular trace before we can decide it should not be. can be fixed soon.
