Re: [dbound] [DNSOP] Related Domains By DNS (RDBD) Draft

Stephen Farrell <stephen.farrell@cs.tcd.ie> Tue, 26 February 2019 22:07 UTC

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To: Bob Harold <rharolde@umich.edu>, "dbound@ietf.org" <dbound@ietf.org>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Tue, 26 Feb 2019 22:07:01 +0000
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Subject: Re: [dbound] [DNSOP] Related Domains By DNS (RDBD) Draft
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On 26/02/2019 21:14, Bob Harold wrote:
> On Mon, Feb 25, 2019 at 3:38 PM Brotman, Alexander <
> Alexander_Brotman@comcast.com>; wrote:
> 
>> Hello,
>>
>> Stephen and I have spent a bit of time working on a draft to be able to
>> show a relationship between two domains.  We're aware this subject has been
>> covered a few times previously, especially in the DBOUND drafts, but we're
>> hopeful that a more simple approach might be more acceptable.   The
>> secondary domain will create a DNS record that shows a link to a primary
>> domain, and the text should be able to be validated using the public key in
>> a DNS record the primary domain shares.  This is something akin to DKIM, a
>> mechanism that the email world uses to ensure the contents of a message
>> have not been tampered with.
>>
>> https://datatracker.ietf.org/doc/draft-brotman-rdbd/
>>
>> We'll request that replies relating to this be sent to the dbound@ietf.org
>> due to the nature of the topic, but it was suggested that we might want to
>> notify a few other lists for their awareness.  Thank you for your
>> participation and comments.
>>
>> --
>> Alex Brotman
>> Sr. Engineer, Anti-Abuse & Messaging Policy
>> Comcast
>>
>>
> The concept looks reasonable to me.
> 
> Both parent and secondary zones should use the "_rdbd" sub-domain for the
> TXT records.  Please do not put TXT records directly on the main domain -
> too many different things are already doing that.  Please update section
> "2.  DNS Record for Secondary Domain" to make that clear.

Good point thanks. I've added a note to the github version. [1]

> Also, please keep an eye on
> https://datatracker.ietf.org/doc/draft-ietf-dnsop-attrleaf
> and add a section to your rfc to add "_rdbd" to the registry, once it
> exists.

I did the same for that.

Thanks,
S.

[1] https://github.com/abrotman/related-domains-by-dns/blob/master/rdbd.txt

> 
>  --
> Bob Harold
> 
> 
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