I hope that you can help.
I have an Exchange 2010 CAS array connected to a hardware load balancer that is doing SSL offloading. There are multiple third party root CA certificates for different domains installed on the load balancer and SSL offloading is working correctly for OWA, ActiveSync, and OA clients. However when a local client attempts to access their mail through Outlook 2010, the following error occurs:
“The security certificate was issued by a company you have not chosen to trust. View the certificate to determine whether you want to trust the certifying authority.”
And then a question of “Do you want to proceed?” is asked and you have to reply Yes, No or View Certificate.
The certificate being used to authenticate the Outlook 2010 clients on the network is the default that is part of Exchange 2010. When I select “yes” I can access mail with no problem and Outlook works just fine, I just want to avoid this pop up from always appearing every time I go into Outlook as there are many users who get this prompt at the moment and trying to avoid it from happening. Are there any settings that you know of that disables the pop up at the same time continuing to use the default certificate from Exchange 2010?