Lindsay Haisley writes:
$ dig +short -t txt _dmarc.paypal.com "v=DMARC1; p=reject; rua=mailto:d@rua.agari.com; ruf=mailto:dk@bounce.paypal.com,mailto:d@ruf.agari.com"
This probably is a problem of lesser magnitude than Yahoo! and AOL
FWIW, I don't consider it a "problem" at all (most definitely YMMV, of course). I think this is what DMARC *should* be used for.
My interpretation is that this is a particular author (a corporate one) allowing her MTA to digitally sign "her" mail, and soliciting the help of "email for those who can't implement Diffie-Hellman off the top of their heads" email providers' MTAs in the effort to protect the author's customers from 3rd party fraud.
I don't know what "paypal-inc.com" is for, so I can't speak to that one.
Steve