spf, > no maillists is broke by yahoo and others, its the maillists that have > never being dkim safe
That's not the only case. Messages forwarded through Yahoo Groups have passed DKIM/DomainKeys for about as long as those standards have existed. Like many lists services, they modify the subject field and append footers to the bottom of the message. Passing DKIM is achieved by removing any original signature and supplying a new one with d=yahoogroups.com. The problem under DMARC, but not under DKIM, is that the signature isn't "aligned" with the From header element, as required by DMARC. So yes, in this case AOL has broken Yahoo Groups in exactly the way that has been long predicted (at least as far back as early 2012 in this list's archives). And a lot of Yahoo Groups members with AOL, Comcast, and other services that currently enforce the reject strictly are upset that they're no longer receiving all the messages in the list traffic. The irony, if there is one, is that Yahoo Groups wasn't prepared for DMARC even though Yahoo Mail led the way down this particular garden path. That has a certain, let's be polite and call it "cognitive dissonance", with Yahoo's public statements in support of their switch to p=reject. -- Shal _______________________________________________ dmarc-discuss mailing list [email protected] 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)
