MS Exchange Server 2003 Interview Question:

Can I deploy OMA in a mixed environment?

Submitted by: Administrator

In a mixed Exchange environment, you must use Exchange 2003 for both the front-end and back-end servers to gain access to mailboxes through Outlook Mobile Access (OMA) and Exchange ActiveSync. For mailboxes on Exchange 5.5 and 2000, you need to deploy Microsoft Mobile Information Server.
Submitted by: Administrator