Now I am able to access the CRM website using the IP address but not the host name.
For example I am able to access the CRM using "http://10.2.0.128/Demo/main.aspx" (Demo is the name of the Organization in my case).
But not able to access using the hostname like "http://crmserver/Demo/main.aspx" (crmserver is the host name).
Please guide me if anything I am missing.