[exim] IDN, UTF-8 and Punycode curiosity

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Author: Mark Elkins
Date:  
To: exim users
Subject: [exim] IDN, UTF-8 and Punycode curiosity
I'm an ISP in South Africa. I have recently UTF-8'ed all my Databases
(mysql) and Web Systems and sites (Apache + PHP 5.3). My 'virtual web'
system understands UTF8 in a name and does all the (so far) correct
translation from/to puny - both for DNS and Apache. Discovered in apache
I also needed the "SystemAlias" to also include the puny name version of
the Domain - as in (hypothetical domain name, 'co.za' does not support
IDN yet)...

(Virtual host config snippet)
ServerAdmin webmaster@café.co.za
DocumentRoot /home/www/café.co.za/web/
ServerName café.co.za
ServerAlias xn--caf-dma.co.za
ServerAlias www.café.co.za
ServerAlias www.xn--caf-dma.co.za

I'm somewhat stuck with e-mail though. What do people usually do???

So from a backend point of view - do I use 'xn--caf-dma.co.za' or
'café.co.za' for e-mail?


What about UTF-8 support for the LHS of the '@' sign - ie can I allow
'rölf@???'?

So far, mailx and evolution seem to dislike UTF-8 in the address fields.

-- 
  .  .     ___. .__      Posix Systems - (South) Africa
 /| /|       / /__       mje@???  -  Mark J Elkins, Cisco CCIE
/ |/ |ARK \_/ /__ LKINS  Tel: +27 12 807 0590  Cell: +27 82 601 0496