Jos Chrispijn:
> Recently read this in my logfile
>
> midna_domain_to_ascii_create: Problem translating domain
> "?M-^X??M-^X??M-^X??M-^...
>
> Can you tell what is triggering this?
Some domain name contained binary garbage, causing the conversion
from UTF8 domain name to PUNY code (a 7-bit form) to fail. With
"smtputf8_enable = yes" (the default), UTF8 domain names may appear
in message headers or in SMTP commands, but DNS uses the 7-bit form.
Postfix converts a domain name into the 7-bit form when looking up
a name in DNS, or when validating the syntax of a domain name, which
happens in a lot of places.
Postfix rejects bad UTF8 syntax in SMTP commands and in lookup table
APIs, but there can be other paths where binary garbage can get
into Postfix.
Wietse
