On 11/12/20 5:06 PM, Kurt Andersen (b) wrote:
> On Thu, Nov 12, 2020 at 2:58 PM Jesse Thompson 
> <jesse.thompson=40wisc....@dmarc.ietf.org <mailto:40wisc....@dmarc.ietf.org>> 
> wrote:
> 
>     On 11/12/20 3:23 PM, John Levine wrote:
>     > You now can put a DMARC
>     > record on a name below the org domain to shadow a subtree, but I don't
>     > think that is a problem that needs to be solved.
> 
>     I'm confused by this statement.  Are you saying that you can "now" do 
> subtree shadowing with sp?  as in the following language is being changed 
> "now"?
> 
> 
> I think that John was referring the potential future state where tree-walks 
> were being done, but even then I don't think it would work quite that easily. 
> A record at "a.b.example" would not shadow "x.y.a.b.example" if "x" or "y" 
> chose to express some policy.

Yes, that makes sense for a defined policy to override any inherited subdomain 
policy. 

Jesse

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