We have a Server 2003 terminal server that is using Outlook 2010 to connect to Exchange 2010. We are using an SSL wildcard certificate. I recently upgraded Exchange from 2003 to 2010 when I noticed some Outlook users on the terminal server were getting "Server unavailable" when opening Outlook. It was resolved by reconfiguring the profile.
I recently rebooted the terminal server and now when anyone opens Outlook, it will give the error message:
"There is a problem with the proxy server's security certicate. The name on the security certificate is invalid or does not match the name of the target site mail.domain.com.
Outlook is unable to connect to the proxy server. (Error Code 0)"
When I attempt to reconfigure the profile, with autodiscover or manually, I am prompted to authenticate. Even though I am using the correct credentials, it does not log in after several trires. When I hit cancel, I get the message:
"Outlook cannot log on. Verify you are connected to the network and are using the proper server and mailbox name. The connection to Microsoft Exchange is unavaliable. Outlook must be online or connected to complete this action."
This MS article desribes pretty well what is happening.
I follow the resolution and go to https://serverip/rpc
, I see "Mismatched address" where the lock would be in the browser confirming I have a secure connection. I click on View Certificates and am presented with my wilcard certificate. I install it into root store as directed.
Unfortunately, this does not resolve my problem. Can anyone suggest where I can go from here to resolve this?
I found another article that explains some of the mechanics behind what's going on with this process, but I'm not entirely sure if it is the answer to my specific problem.