What I do with KPF is to deny any program that I don't recognise as needing to use the internet. So IE & Outlook I permit and put a tick in the box to create a rule. Anything that I don't recognise I create a rule and deny. So far in the 18 months I have been using Kerio I haven't had a problem. Generally these warnings and requests will stop as the firewall learns what you let thru' and what you don't.