Receiving Access denied - you don't have permission to access "http://ups.com/ups.app/xml.rate" on this server.

I tried to verify the card operation at the end of the week (as the handler was putting the server in a test mode for the credit cards). I discovered another problem. I received a shipping error that the UPS ‘rate.xml’ page on UPS could not be accessed. I checked today and it appears that my original login, password and key are no longer valid.

I created a new login at UPS, and got a new key from the API (shipping). The username was the same as before. Due to the password rule changing, I had to slightly change the password. I updated the confirm.asp page in our site with the correct username, password and key. I still get the same result. Please see the attached error.

Any ideas? Any help would be appreciated.