Re: [ietf-smtp] G.7.3 --- resolvable FQDNs

[John Levine <[e-mail]>]

In article <[e-mail]> you write:
>Just a thought, is this maybe time to enshrine some of the MAAWG 
>recommendations surrounding this?
>
>If your email server egress IP has a PTR of:
>
>mail.example.com
>
>There SHOULD be a URL that responds to http://example.com, where 
>information and contact information about the operator can be found..

Can you give us a pointer to the document that says that?  I've read a
lot of M3 documents and don't recall seeing it.

>Also, some operators still find a need for multiple PTR's for an IP, and 
>some language around avoiding too many PTR records for the same IP, and 
>that EACH PTR should have an associated A record and functioning URL.

I don't see the point here. Unless you're doing MTA-STS, which is a
separate spec, an MTA doesn't know what name a client thinks it has.

R's,
John
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