For the longest time I have been fighting with "antispam module no cloud connectivity".
I ran Marcos's asclouddiag. The first query always fails it seems and looking at my firewall i get a " DNS rebind attack blocked" in my event logs even though i have allowed the traffic over those ports and to the allowed addresses.
Is my firewall just being stupid? Currently says "you are protected" after messing with my firewall rules (yay!), but i still get those failed response's and DNS rebind attack blocked if i run the diag.