Block web access for Outlook Anywhere Users

Rule 1
Firewall Policy -> Create a new access rule
Name "Exchange OWA"
Action = Allow
Protocols = HTTP and HTTPS
From = Internal
To -> New Computer and\or new URL set -> Enter name\IP and save -> add to the TO
User set = All users


This rule must be above than the rule2

Rule 2
Firewall Policy -> Create access rule
Name "Block HTTP\HTTPS Access"
Action = Deny
Protocols = HTTP and HTTPS
From = INternal
To -> external
User set = All users