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Re: [dmarc-ietf] WGLC review of draft-ietf-dmarc-dmarcbis-30

"John R. Levine" <johnl@iecc.com> Sun, 31 March 2024 17:32 UTC

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Date: Sun, 31 Mar 2024 13:32:13 -0400
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From: "John R. Levine" <johnl@iecc.com>
To: Jim Fenton <fenton@bluepopcorn.net>
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Subject: Re: [dmarc-ietf] WGLC review of draft-ietf-dmarc-dmarcbis-30
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>>> I’m probably being pedantic here: is “gov” a domain?
>> Yup, it's a domain.
> I stand corrected on that.

Anything that meets the DNS spec is a domain namen, e.g., 
argle.bargle.parp is a domain name.  If and how particular names might be 
resolved is a topic to which the IETF and ICANN have given a certain 
amount of attention.

> Might be worth bumping up. Examples:
>
> execute-api.cn-north-1.amazonaws.com.cn
> cn-northwest-1.eb.amazonaws.com.cn
>
> (Amazon seems to have most of the really long ones)

None of those Amazon ones are used for mail so they're irrelevant to 
DMARC, but see Seth's recent message.  He says he's seen mail domains 8 
deep.

R's,
John

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