Re: Domain check in draft-obispo-epp-idn-00.txt

On 05/01/12 03:34, Andrew Sullivan wrote:

> On Wed, Jan 04, 2012 at 07:15:49PM -0500, Michael Young wrote:
>  
>> the use cases. Somewhere in all that I noted you were ok with the
>> check ext being optional :-)
> 
> Actually, you misread, then.  I think servers (implementing this
> extension) MUST support the extension to check.  Clients MAY send it
> or not (which means that implementation is for practical purposes
> optional for them.

Very true, and that I would be OK with, though I suspect many registrars
would simply ignore the extension of <domain:check>, making the requirement
that registries support is somewhat pointless.

Still, you've left out the most important reason why servers ought to be
checking IDNs: registrars and their customers can lie. Just because they've
filled out they filled out the language tag doesn't mean that language code
has any bearing on reality. At best, if they are validating, it's just a way
for the registry to cut down on the number of whitelists they need to check.

Now, there are reasonable reasons for a registrar to lie. We, for instance,
only take a guess at the language an IDN might be for and for the likes of
Neustar who require a language code be provided, we provide that to them.
The domain might actually be an Irish-language one like
rásrothairnabhaile.biz[1], but that'll fit the table for French, which means
as far as the registry is concerned, that's a valid IDNs.

K.

-- 
Keith Gaughan, Senior Developer
PGP/GPG key ID: 3E896381
Blacknight Internet Solutions Ltd. <http://blacknight.com/>
12A Barrowside Business Park, Carlow, Ireland
Registered in Ireland, Company No.: 370845
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