InstructionGo to: Application Firewall >> Reverse Proxy and click at the top of the Mapping column on the + sign.Choose New from template >> Outlook Anywhere, which matches your Outlook Anywhere version.The following mappings, based upon the template, have been created:-Exchange Autodiscover-Exchange EWS-Exchange MAPI-Exchange OAB-Exchange Outlook AnywhereGo to: Application Firewall >> Reverse ProxyConnect the new Outlook Anywhere mappings with the corresponding virtual host.Corresponding virtual host: exchange.ext.virtinc.comConnect the new Outlook Anywhere mappings to the corresponding back-end group.The mappings have been established and can be activated.