Hello,

A while ago, Stephen and I had sent out a few versions of this, and we had some 
discussions and revisions were made.  At the time, discussion waned, however I 
wanted to pick this up again before the onset of IETF107.

https://datatracker.ietf.org/doc/draft-brotman-rdbd/

 I've had some folks contact me privately, and I saw an inquiry on another 
list.  There does seem to be some interest, at least in the anti-abuse and 
research communities, of making this a functional proposition.

To recap, the rough idea is that implementers would be able to positively or 
negatively confirm relationships between domains.  In the world of anti-abuse 
and research, these links are not always obvious.  For example, in a large 
corporation, some teams may go outside acceptable practice and register a 
domain through another provider.  Or it may be that you have international 
branches that operate on a different TLD, but you may not have registered with 
all TLDs.  In the latter case, being able to both positively and negatively 
state a relationship could be useful for anti-spam/phishing.

Any questions or comments would be greatly appreciated.  Thank you.

--
Alex Brotman
Sr. Engineer, Anti-Abuse & Messaging Policy
Comcast

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