Settings required once Outlook Anywhere, ActiveSync and EWS have already been configured and enabled within the Exchange 2010 Console or Shell.  To make sure that the services are operational for the end user client stations / devices, IIS Authentication for the Default Web Site's subsites/virtual directories are to be matched to the below:

Autodiscover
Anonymous Authentication Enabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Enabled

ecp
Anonymous Authentication Enabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Enabled

EWS
Anonymous Authentication Enabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Enabled

Microsoft-Server-ActiveSync
Anonymous Authentication Disabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Disabled

owa
Anonymous Authentication Disabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Enabled

Rpc
Anonymous Authentication Disabled
ASP.NET Impersonation Disabled
Basic Authentication Enabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Disabled

RpcWithCert
Anonymous Authentication Disabled
ASP.NET Impersonation Disabled
Basic Authentication Disabled
Digest Authentication Disabled
Forms Authentication Disabled
Windows Authentication Disabled

Make sure that the Default Web Site's bindings do NOT have a hostname or hostname.domainname assigned to a port and IP address.  All configurations for hostname to be used internally and externally are now configured within the Exchange 2010 Console or Shell.  It is not dependent on IIS any longer like that of the Exchange 2003 services.

On the IIS Exchange Server, at the command prompt, run iisreset to restart the web services so that it can pick up the new configurations.

At this point, you can use the https://www.testexchangeconnectivity.com/ - Remote Connectivity Analyzer to test the various functions of the web.