Re: [regext] Internationalized Email Addresses and EPP

Taras Heichenko <tasic@academ.kiev.ua> Mon, 23 November 2020 18:46 UTC

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From: Taras Heichenko <tasic@academ.kiev.ua>
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Date: Mon, 23 Nov 2020 20:46:19 +0200
Cc: "Hollenbeck, Scott" <shollenbeck=40verisign.com@dmarc.ietf.org>, "Klaus.Malorny@knipp.de" <Klaus.Malorny@knipp.de>, "regext@ietf.org" <regext@ietf.org>, "Gould, James" <jgould@verisign.com>, "alex.mayrhofer.ietf@gmail.com" <alex.mayrhofer.ietf@gmail.com>
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Subject: Re: [regext] Internationalized Email Addresses and EPP
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Hi!

> On 23 Nov 2020, at 17:00, Dmitry Belyavsky <beldmit@gmail.com> wrote:
> 
> Dear Scott,
> 

[skip]

> 
> This may be the path of least resistance. I'm still trying to think through hat would happen if a registry returns an internationalized email address to a registrar that doesn't expect one. This could happen after a domain transfer, for example. Is this a problem? If not, maybe we could just get by without any other protocol changes or extensions.
> 
> From my point of view, if the registry has implemented EAI support, all the registrars will have to do it. They should deal with the clients with such emails _somehow_. 
> E.g., they hardly can reject the transfer relying on this reason.

There are cases when registry cannot enforce registrars to implement some features. But I see no problem in the registry response with EAI. EPP works with UTF-8
encoding so EAI should not cause the EPP interface crash. Such email can cause strange symbols in the web interface but as for me it should not bring serious problems.

>  
> 
> > For example, what would an "old" client do that doesn't understand a
> > potential EAI extension? Would they be deprived of email addresses
> > completely, and receive non-sensical placeholders which they'd unwittingly
> > hand over to their email system (even if that email system would perfectly
> > understand EAIs?). Does sound like a failed opportunity to me!
> 
> See question above.
> 
> Scott
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> 
> -- 
> SY, Dmitry Belyavsky
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--
Taras Heichenko
tasic@academ.kiev.ua