Private registries create a problem for the PSD for DMARC specification. The subtree underneath the PSD policy may include the PSD-registered organization and potentially the client of that organization, if the organization operates a private registry.
Presumably, in some cases such as .Bank, the PSO will have contractual controls which ensure that the registered organizations will not operate private registries. Where this is the case, relaxed alignment is still acceptable. But if there is any possibility that a PSO-registered organization might operate a private registry, now or in the future, then the PSD policy needs to specify strict alignment. DF
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