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Re: [dane] Working group Last call: draft-ietf-dane-smime-11.txt

Sean Leonard <dev+ietf@seantek.com> Sat, 09 July 2016 23:16 UTC

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From: Sean Leonard <dev+ietf@seantek.com>
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Date: Sat, 09 Jul 2016 16:15:38 -0700
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Subject: Re: [dane] Working group Last call: draft-ietf-dane-smime-11.txt
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On 7/9/2016 11:15 AM, John Levine wrote:
>> Any other issues should be brought forward
> Section 3 says:
>
>        If the local-part contains any non-ASCII characters, it SHOULD be
>        normalized using the Unicode Normalization Form C from
>        [Unicode52].
>
> but section 4 says:
>
>     Therefor, sending MUAs and MTAs supporting this
>     specification MUST NOT perform any kind of mapping rules based on the
>     email address.
>
> Section 3 is wrong -- when RFC5321 says that local parts are opaque,
> it means it. RFCs 6530 through 6532 deliberately did not provide any
> advice on canonicalizing UTF-8 local parts, and it's inappropriate to
> do it here.

+1 to John's point. Remove the sentence in Section 3.

Regards,

Sean

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