I'm getting this same error. I know how to open the firewall, but what I can't find in this thread is: why do I want to? Googleing the Push Notification Servers brings up stuff about remote management that is all well and good for an enterprise, but I'm a home user. I don't WANT servers controlling my AV. Isn't the client's pull check for updates the appropriate tool for me?
If not, please explain why not. If so, please explain how to stop this message without opening more ports on my (admittedly aggressive, by design) firewall.
