Connectivity to Internet and Exchange can be configured in several ways on a network.


1. Access to the internet can be configured using a Direct mode or via a WebRequest


    Changing the internet ping strategy to an alternate may resolve the error "Internet not Available"

    

        Strategy A - Direct

        Strategy B - Web Proxy


Similarly 


2. Access to Exchange can be configured Direct via http or via Proxy or via Exchange Service


    Changing the internet ping strategy to an alternate may resolve the error "Exchange not Available"


        Strategy A - Direct

        Strategy B - Web Proxy

        Strategy C - Exchange Service