Patrik Jansson wrote: >> Argh.
>> Yes, you could use allow_utf8_domains and dns_check_names_pattern and that
>> could work, if your resolver handles the conversion.
>> HOWEVER you would just carry the problem further to the next MTA that would
>> need to handle the same problems.
>>
>> SO PLEASE, if you accept such (protocol violating) addresses, rewrite them
>> and pass them further using an correct encoding (such as punnycode).
> I just want Exim to do IDN conversion (if needed) before sending it to
> the next MTA.
So you just have to find an address rewrite rule (or more than one) that
translates IDN into punnycode at SMTP time. Exim can do this. However, I
have no idea on what the rule will look like.