I needed to add a CAS to our environment to specifically service a calendaring application - the application cert requirement was higher than what our already purchased/production 3rd party cert provided; therefore we are using an internal CA for the calendaring application and pointing the application directly to this CAS server. As you can imagine I have been getting calls regarding security alerts for CAS activity for Outlook clients (autodiscover); is there a way to remove the specific CAS server from the autodiscover process yet still be able to service the calendaring application? Basically I do not want Outlook clients or any clients for that matter to connect to this server for calendaring information; yet I still need this server to be able to service the calendaring application mentioned above. I hope that make sense....thanks in advance for you help!

On the server itself, change the InternalautodiscoverURI value on set-clientaccesserver to the URL of one of the other CAS servers. Basically there is a fight over the URL being published to the domain. Change it so they are both the same and that shouldn't happen. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hi, More information about set-clientaccesserver command: http://technet.microsoft.com/en-us/library/bb125157.aspxPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Thanks Gen Lin-MSFT