[dmarc-discuss] DMARC rejections on domain with no DMARC record

John Levine johnl at taugh.com
Mon Jun 30 11:13:48 PDT 2014

I just saw a blizzard of DMARC rejects on a mailing list message from
a subscriber with an address at netscape.net.  (Yes, there still are a
few.)  That domain belongs to AOL, but publishes no DMARC record.

So how come AOL, Yahoo, Comcast, and Hotmail rejected it with SMTP
errors that clearly said it was a DMARC rejection?  It's hard enough
to deal with DMARC as implemented.  It's impossible to deal with it if
there are sekrit rules that normal people don't know about.


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