Re: [dmarc-ietf] Definition of "value" in RFC8601

[Scott Kitterman]

On March 31, 2020 4:56:51 PM UTC, John Levine <jo...@taugh.com> wrote:
>In article <3295240.vh5t8hYAJM@sk-desktop> you write:
>>> If you want it to be a domain, the ABNF should say:
>>> 
>>>       authserv-id = domain-name
>
>>> This is not strictly backward compatible with the current text, but
>I
>>> don't think I've ever seen an authserv-id which wasn't syntactically
>a
>>> domain name.
>>
>>I've seen bare host names used.  I guess that's syntactically a domain
>name 
>>also, but might not be what you expect if you assume it's really a
>domain 
>>name.  It probably doesn't matter.
>
>I don't see any reason to exclude them.  We could do this:
>
>      authserv-id     = sub-domain *("." sub-domain)
>
>Where sub-domain is imported from 5321 for ASCII mail and 6531 for EAI
>mail.

That does allow IP address literals.  Do we want that?

Scott K

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