DNS issue OWA and Telnet

Dear All,

I am having issue to access exchange 2010 OWA locally, when try to access from client machine to enter OWA addresshttps://mydomain.local/owa but unable to get login page and error display "the page cannot displayed". I am able to telnet through IP address from local installed exchange 2010 server and if telnet by name it display error message "The service not available"

I think both are local AD DNS issue. Kindly can some one help me out from this.

Thanks