It appears that Dave Crocker  <dcroc...@gmail.com> said:
>-=-=-=-=-=-
>
>G'day.
>
>The method of finding the organizational domain should be specified 
>outside of the base DMARC specification.  I suggested this back during 
>the PSD discussion.

That assumes that the org domain is useful on its own, rather than
just as a tool to help find policy records or to check for relaxed
alignment.

We tried and failed to find a general method to find an organizaional domain
in DBOUND, and I don't think we want to go there again.

>1. There is already an installed base using the PSL.  While I understand 
>the desire to move away from it, the change might or might not happen 
>and if it does, it will take a potentially long time. ...

I think we have all agreed that whatever we come up with has to produce
similar results to the current scheme.  I say similar rather than identical,
since the PSL is a moving target.

>2. In spite of the current fashion that encourages use of tree walk, it 
>does not have prior field experience and in fact runs contrary to 
>long-standing, established practices. ...

RFC 8659 suggests otherwise.

R's,
John

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