Dear AllWhat is the best practice enviroment for publishing owa and RPC over http in ISA 2006Is it better to use Front End Excahgne in the DMZ and open ports in the ISA, or make the publishing without the Front End Excahgne.Thnaks All

You havent mentioned your Exchange version, but its never a good idea to put the Front End in the DMZ and its not supported in Exchange 2007/2010.More info:http://technet.microsoft.com/en-us/library/bb794751.aspxPublishing Exchange Server 2007 with ISA Server 2006 http://technet.microsoft.com/en-us/library/bb794845.aspxPublishing Exchange Server 2003 with ISA Server 2006You may want to ask these questions on the Edge security Technet Forums:http://social.technet.microsoft.com/Forums/en/ForefrontedgeIA/threads