Maybe I'm just paranoid but if you configure your DMARC records to receive reports via email, doesn't that open the door for malicious actors to send bogus reports, if for no other reason than just for the lulz? I realize that the only sane way to deal with these reports is via an automated service (nobody in their right mind wants to manually parse through tons of XML reports on a regular basis) but how do I stop the incoming data from being poisoned?