I was testing this ability today and here is my issue:
We are behind a proxy first of all
I added a rule to allow *.symantec.com via IE and moved it to the top
I added a rule to block * via IE and moved it underneath the allow rule
After updating the policy, all websites were blocked
Then I added both proxy servers to the allow rule
Now I could to symantec.com but I could also browse any website I wanted to. So it seems like it's one or the other.
I'm not sure how to proceed now.
Any ideas?