Is there some way of ignoring the DMCAC bounces? That way a message From: someone@yahoo.com will not not increase the bounce count of all Yahoo, AOL, Hotmail, ATT, MSN, and Comcast users.
Yahoo & ATT say this: 554 5.7.9 Message not accepted for policy reasons. See http://postmaster.yahoo.com/errors/postmaster-28.html
AOL says this: 521 5.2.1 : (DMARC) This message failed DMARC Evaluation and is being refused due to provided DMARC Policy
Comcast says this: 550 5.2.0 x4fx1n03n5DGQ1A034fysP Message rejected due to DMARC. Please see http://postmaster.comcast.net/smtp-error-codes.php#DM000001
MSN/Hotmail say this: 550 5.7.0 (BAY0-MCn-Fn) Unfortunately, messages from (N.N.N.N) on behalf of (yahoo.com) could not be delivered due to domain owner policy restrictions.)
Andrew Partan