I can't really follow this. If I am trying to email you, there is nothing that could be broken about your DMARC policy which would prevent your mail server rece

I can't really follow this. If I am trying to email you, there is nothing that could be broken about your DMARC policy which would prevent your mail server receiving my email. What matters would be my own policy, as the sender. Now you might prevent me seeing your replies, but that's another matter.