Hi,
1. Exchange Server need to communicate with Active Directory. So please ensure that Exchange Server will be isntalled in Domain environment.
2 Since we will install Exchange Server into AD environment,so please ensure that the account which you will use to install Exchange Server has proper rights to read and write data from Directory Services.
Permission Considerations
http://technet.microsoft.com/en-us/library/aa996881.aspx3. Exchange Server has Exchange ActiveSync which allow all users who have an Exchange mailbox can synchronize their mobile device with the Microsoft Exchange server.
Overview of Exchange ActiveSync
http://technet.microsoft.com/en-us/library/aa998357.aspxMicrosoft Exchange Server 2007
http://technet.microsoft.com/en-us/library/bb124558.aspxRegards,
Xiu
