Re: [DNSOP] new ANAME draft: draft-hunt-dnsop-aname-00.txt

Florian Weimer <fweimer@redhat.com> Tue, 11 April 2017 20:20 UTC

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To: Tony Finch <dot@dotat.at>
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Cc: Paul Wouters <paul@nohats.ca>, dnsop <dnsop@ietf.org>
From: Florian Weimer <fweimer@redhat.com>
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Date: Tue, 11 Apr 2017 22:20:31 +0200
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Subject: Re: [DNSOP] new ANAME draft: draft-hunt-dnsop-aname-00.txt
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On 04/11/2017 10:15 PM, Tony Finch wrote:
>
>> On 11 Apr 2017, at 20:39, Florian Weimer <fweimer@redhat.com> wrote:
>>> On 04/11/2017 09:15 PM, Tony Finch wrote:
>>>
>>> That doesn't work if the web server is at 3rd party provider A but you want provider B's mail service not provider A's.
>>
>> I don't understand.
>>
>> I think it boils down to who operates the target DNS zone and how flexible they are.  It has nothing to do with who runs the web server.
>
> In many cases the ANAME target will be a mass web hosting provider which doesn't have any flexibility in their DNS setup.

And in order to accommodate them, we upgrade the DNS server 
infrastructure across the Internet?

I understand that's how things work in practice, but I don't kike it.

> And you still don't want CNAME pointing at MX because of the interop problems.

CNAME to MX is fine.  Isn't this what's relevant here?

Thanks,
Florian