Dear Murray,

Done, many thanks!

On Sun, May 22, 2022 at 7:51 AM Murray S. Kucherawy <[email protected]>
wrote:

> On Fri, May 20, 2022 at 6:08 AM Dmitry Belyavsky <[email protected]>
> wrote:
>
>> On Tue, May 17, 2022 at 7:28 PM Murray S. Kucherawy <[email protected]>
>> wrote:
>>
>>> 1) In Section 3, you have:
>>>
>>> "The validation rules introduced in RFC 6531 are considered to be
>>> followed."
>>>
>>> I don't quite understand this sentence.  Do you mean this?
>>>
>>> "It is assumed that addresses used with this extension will pass the
>>> validation rules introduced in RFC 6531."
>>>
>>> If not, please clarify.
>>>
>>
>> Yes, we mean this, but we would prefer the following wording:
>> "The validation rules introduced in RFC 6531 MUST be followed when
>> processing this extension."
>>
>> Are you OK with this?
>>
>
> Yes, thanks, that's clearer.
>
>
>>
>>>
>>> 3) For Section 8, I suggest this to get rid of the layered
>>> SHOULD/RECOMMENDED:
>>>
>>> "To reduce the risk of future usability errors, registries SHOULD
>>> validate all code points in the domain name of any provided email address
>>> according to IDNA2008 [RFC5892]."
>>>
>>> Then again, usability errors aren't something I would expect to be
>>> discussed in a Security Considerations section, so maybe this should be
>>> someplace else?
>>>
>>
>> Would you like something like this?
>>
>> "As email address is often a primary end user contact, invalid email
>> address may put the communication with the end user into risk in case when
>> such contact is necessary. To reduce the risk of the use of invalid domain
>> names in email addresses, registries SHOULD validate the domain name syntax
>> in the provided email addresses and validate all code points in the domain
>> name according to IDNA2008 [RFC5892]"
>>
>
> That's better, but this still doesn't feel like a security matter to me as
> worded.  If you want to add a sentence or two about what security threat
> exists if this validation isn't done, that makes a better argument.
>
>
>>
>>>
>>> 4) You might want to say something explicit about all of the EAI
>>> security issues also applying to this work.
>>>
>>
>> We have pretty well described security considerations in RFCs 6530 and
>> 6531. I think referring to them is a good option. I don't think we have any
>> extra security considerations here.
>>
>
> Fine with me.
>
>
>> If you are OK with the suggested changes, I will publish the updated
>> draft version ASAP.
>>
>
> Yep, ship it!
>
> -MSK
>


-- 
SY, Dmitry Belyavsky
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