Andrew Sullivan <asulli...@dyn.com> writes: > I think DMARC is mostly useful when used correctly. There is no BCP > yet...
There is, however, BCP167/RFC6377 covering DKIM and mailing lists. Some relevant sections are 4.1 and 5.3: 4.1: ... site administrators wishing to employ ADSP with a "discardable" setting SHOULD separate the controlled mail stream warranting this handling from other mail streams that are less controlled, such as personal mail that transits MLMs [Mailing List Managers]. 5.3: At subscription time, an ADSP-aware MLM SHOULD check for a published ADSP record for the new subscriber's domain. If the policy specifies "discardable", the MLM SHOULD disallow the subscription or present a warning...
