Re: [regext] Internationalized Email Addresses and EPP

"Hollenbeck, Scott" <shollenbeck@verisign.com> Mon, 23 November 2020 20:09 UTC

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From: "Hollenbeck, Scott" <shollenbeck@verisign.com>
To: "tasic@academ.kiev.ua" <tasic@academ.kiev.ua>, "beldmit@gmail.com" <beldmit@gmail.com>
CC: "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>
Thread-Topic: [EXTERNAL] Re: [regext] Internationalized Email Addresses and EPP
Thread-Index: AQHWwalkAXUbxf00tUW+4vL2x8ekVKnWYluA///CP7A=
Date: Mon, 23 Nov 2020 20:07:45 +0000
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References: <C9EBEF19-55C1-4C5E-87BC-894FBF7439FF@verisign.com> <CAHXf=0p5F1LsUYoeX_mRNvuKNpeOvWufY0tNL9zNn+6Zj0cR1A@mail.gmail.com> <3d6ce5fd7d1e482fb3df168e0d26c0a0@verisign.com> <CADqLbzJC593jbno93Uc2zc1uM65TuN4YXgj5wzeZzhW2GmxDMg@mail.gmail.com> <999A4A0A-CFC1-448C-882B-E8053ADFA272@academ.kiev.ua>
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Subject: Re: [regext] Internationalized Email Addresses and EPP
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> -----Original Message-----
> From: Taras Heichenko <tasic@academ.kiev.ua>
> Sent: Monday, November 23, 2020 1:46 PM
> To: Dmitry Belyavsky <beldmit@gmail.com>
> Cc: Hollenbeck, Scott <shollenbeck@verisign.com>om>;
> Klaus.Malorny@knipp.de; regext@ietf.org; Gould, James
> <jgould@verisign.com>om>; alex.mayrhofer.ietf@gmail.com
> Subject: [EXTERNAL] Re: [regext] Internationalized Email Addresses and EPP
>
> Caution: This email originated from outside the organization. Do not click links
> or open attachments unless you recognize the sender and know the content
> is safe.
>
> 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.

That's only true if you're not also doing syntax checking of the local part outside of what your XML parser is doing with the schema. A regular expression to match an ascii-only local part would NOT match an internationalized email address.

Scott