[ietf-dkim] Internationalized domain names

Douglas Otis dotis at mail-abuse.org
Wed Jul 19 09:30:48 PDT 2006


On Jul 18, 2006, at 5:25 PM, Paul Hoffman wrote:

> Eric added the following to base-04:
>        Internationalized domain names MUST be punycode-encoded
>        [RFC3492].
> This is very wrong. The Punycode encoded value does not include the  
> "xn--" string.
>
> The text should instead read:
>        Internationalized domain names MUST be converted using
>        the  steps in section 4 of [RFC3490] using the ToASCII
>        function.

Agreed.

Calling this an ACE label which is identified by the "xn--" prefix  
may avoid some of the confusion.

This could also be written as:

  Internationalized domain names MUST be converted using the
  steps in section 4 of [RFC3490] into "ACE" labels using the
  ToASCII function.



-Doug


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