Re: [idn] Reality Check

[D. J. Bernstein]

Adam M. Costello writes:
> IDN-incapable subscribers will be completely unable to reply

Are you saying that there are mail readers today that can't reply to a
UTF-8 address? Please identify the specific software bugs that you're
talking about.

As far as I know, there are only two relevant bugs anywhere in the
entire mail path: the UNIX gethostbyname() 8-bit bug, which in current
versions is trivially worked around with a one-line change to
/etc/resolv.conf, and the sendmail 8-bit bug.

There are certainly some programs that don't _display_ UTF-8 nicely, but
that's a separate issue. (They don't display ACE nicely either.)

---Dan