Hi! I have setup an exchange 2010 server with OWA access. Using TMG and procedures outlined in the MS ForeFront Threat Management Gateway book from MS, I was able to successfully get the external clients authenticating and using OWA. However, in order to get the OWA working externally, I had to change the bindings on the exchange/OWA default server for port 443 from the default exchange server (mercury) certificate to the external, validated certificate. Now when internal clients try to go to the internal owa address (https://mercury.myserver.local/owa
) they get a message that IE "can't display the web page". I have tried using the IP for the exchange server and still the same message. Internal users can reach it fine if they use the external address that is validated by the certificate binding. I can fix this problem by switching the bindings back to the internal certificate, but then the external users can't access.
How can I give access to both the external, and internal users?