Some versions of the Outlook client show aRequesting datawindow if the server does not respond to a client request in a timely manner. These issues are typically attributed to server load or a bottleneck on the
configure the firewall between the perimeter and the intranet to be as restrictive as possible and to host the CAS server on the intranet. This will get traffic inspection and other reverse proxy security filtering in place in the perimeter. ...
the FE servers in Exchange 2000/2003 don't do any Outlook Web Access (OWA) rendering. That all takes place on the BE servers. The Exchange 2007/E2010 CAS role on the other hand contains all middle