On 7/7/2017 1:33 PM, Seth Blank wrote:
    Receivers know the selector.  If they feed domain and selector into
    their
    Bayesian processors and get a useful distinction, they are going to
    use it.
    No RFC will change that.  If there's some statistically significant
    difference
    in 'sources' identified that way, then that's their call.


Agreed 100%

This was a hot topic when DKIM first came out. It represents a failure to use or understand the role of selectors properly. The reputation /should/ rely only on the domain name /without/ the selector, so the selector can be used only for administrative purposes, such as rolling over to a new key.

Note, for example, that including the selector in the reputation analysis means that the history of the actor is lost when a new selector is used.

d/

--
Dave Crocker
Brandenburg InternetWorking
bbiw.net

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