>From a DMARC perspective, if you know the sender is trustworthy, you do a >local override. ARC doesn't >seem to be needed for that.
I have many of the same questions you do, but it is my impression that a surprising number of lists behave fine for a long time, then some bad guy starts pumping spam through it by impersonating one of the subscribers. ARC should be helpful in that perhaps non-exotic situation. R's, John _______________________________________________ dmarc-discuss mailing list dmarc-discuss@dmarc.org http://www.dmarc.org/mailman/listinfo/dmarc-discuss NOTE: Participating in this list means you agree to the DMARC Note Well terms (http://www.dmarc.org/note_well.html)