>especially Google and Microsoft's (whose e-mail servers don't play by any of the standard rules nor do they send DMARC reports) I don't know about Microsoft,

>especially Google and Microsoft's (whose e-mail servers don't play by any of the standard rules nor do they send DMARC reports) I don't know about Microsoft, but I get a couple of DMARC reports per day from Google's email infrastructure. I also get reports from aol.com, yahoo.com, linkedin.com, comcast.com, fastmail.com, etc.