Free busy information not working in new exchange site.

HI,

We have central site Exchange 2010 setup and it working fine . For business requirement we Installed new Exchange server(Mail/CAS/HUB) in new site.

Post installed, Auto discover and mail flow are working fine but Free/busy information is not working for new site mailbox users(Not working in outlook and OWA also).

I am having a strange error coming from outlook. When I run "Test E-mail AutoConfiguration" in Outlook, it comes up with Protocol: Exchange Http "wrong server name"

Please share your suggestion to change/configure  "correct server name"  in"Protocol: Exchange HTTP"

Protocol: Exchange HTTP
Server: wrong server name
Login name: testuser
SSL: Yes
Mutual Authentication: Yes

Note : ( Protocol: Exchange RPC show correct server information and other Urls (OOF, OAB, OWA, Availability server).)