I have one internal Exchange 2007 server providing email for my users. I would love to give my users access to owa and send and recieve email from cell phones. Do I need to install an Edge Transport server to make this happen?

Dear customer: In Microsoft Exchange Server 2007, there are five server roles that you can install and then configure on a computer that is running Microsoft Windows Server 2003. The Client Access server role supports the Microsoft Outlook Web Access and Microsoft Exchange ActiveSync client applications and the Post Office Protocol version 3 (POP3) and Internet Message Access Protocol version 4rev1 (IMAP4) protocols. The Client Access server role also supports services, such as the Autodiscover service and Web services. The Client Access server role accepts connections to your Exchange 2007 server from a variety of different clients. Software clients such as Microsoft Outlook Express and Eudora use POP3 or IMAP4 connections to communicate with the Exchange server. Hardware clients, such as mobile devices, use ActiveSync, POP3, or IMAP4 to communicate with the Exchange server. The Client Access server role is required in every Exchange Server 2007 organization. You should install CAS server role not Edge transport server role. For more information about Edge, you can refer to the following article: Edge Transport Server Role: Overview http://technet.microsoft.com/en-us/library/bb124701(EXCHG.80).aspx For more information about CAS, you can refer to the following article: Client Access Server Role: Overview http://technet.microsoft.com/en-us/library/bb125134(EXCHG.80).aspx Hope it helps. If anything is unclear, pleases feel free to let me know. Rock Wang - MSFT