On Wed, Apr 22, 2015 at 07:44:07PM +0000, Viktor Dukhovni wrote:

> Lots of other stuff to think about.

Question for the Exim team.  It seems you have code for converting
UTF-8 localparts to ASCII.  What encoding do you use for that?  I
am not aware of anything in EAI that standardises such an encoding.
It seems that Microsoft has an ad-hoc ASCII encoding for UTF-8
localparts, are you using the same one?  They use "xl--" followed
by the Punycode encoding of the localpart.

    https://msdn.microsoft.com/en-us/library/dn600431.aspx

Are we heading towards a de-facto standard here?  Or just multiple
ad-hoc approaches.

-- 
        Viktor.

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