On Wed, Apr 25, 2012 at 09:23, Heiko Schlittermann <hs@???>wrote:
> Hello,
>
Hi there!
>
> we've some clients sending messages to umlaut (UTF8) domains. As far as I
> know,
> the client is responsible for converting any UTF8 domain into the punycode
> form.
>
> It seems, that there are clients (squirrel mail, thunderbird, …?) not
> beeing aware of the problem.
>
Thunderbird is worse than you expect. It STRIPS any non-ASCII characters
from the domainname.
If I were to send to e.g. jan@øyet.no, it would be sent to
jan@???, no warnings, no error messages.
The Thunderbird maintainers simply don't care, and there is nothing you as
a mail system admin can do to fix their insanity.
mutt 1.4.2.1 and some others send unencoded.
Someone bothered to compile a partial list here:
http://www.domainnameshop.com/faq.cgi?id=100
>
> Are there other or cleaner solutions out there?
>
Yes, don't permit invalid characters.
> Does somebody already do it?
>
I hope not. :)
> Does there an UTF8 capable DNS resolver exist?
>
I don't think there is an auto-converting DNS resolver, if that is what you
mean.
--
Jan
