Not receiving emails from one contact
I am not receiving emails from one of my contacts. I receive them on my PC, but not on my phone. All other emails go to both my pc and my phone. Two days ago, I received an error message saying that a message I sent could not be delivered to this particular recipient. (exceeded max time without delivery). Since then, I can no longer receive emails from this contact on my phone. I sent him a test email from my phone, and he received it. Is there a setting somewhere that would block or unblock emails from a particular cantact?