I have got Exchange Server 2010 installed on an SBS standard 2011 server. I want to use the outlook anywhere service so that all the clients which are not on the same domain or on the same LAN could use exchange server mailbox. In order to perform that i have to fill in a proxy server address in the settings of the exchange server. Do i have to install a proxy server first on my server??? If yes then how could i install and configure the proxy server.