> > > Barry, this is obviously a new relaxation option. From a mail system > integration standpoint, the options are: > > 1) A version bump to DMARC2 with new semantics with backward DMARC1 > compatibility, or > > 2) Use a DMARC1 Extended tag option allowed by DMARC1. Alessandro cited > an excellent backward compatible extended tag option: > > auth=dkim|spf (default value), auth=dkim+spf, auth=dkim, auth=spf > > >
FWIW, I support the concept above, which would be compatible with DMARC today. Would anyone from a large receiver like to comment? Regards, Ken
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