New features introduced in Exchange Server 2007.

  • Protection: Anti-spam, antivirus, compliance, clustering with data replication, improved security and encryption 
  • Improved Information Worker Access: Improved calendaring, unified messaging, improved mobility, improved web access 
  • Improved IT Experience: 64-bit performance and scalability, command-line shell and simplified GUI, improved deployment, role separation, simplified routing 
  • Exchange Management Shell: a new command-line shell and scripting language for system administration (based on Windows PowerShell). Shell users can perform every task that can be performed in the Exchange Server graphical user interface plus additional tasks, and can program often-used or complex tasks into scripts that can be saved, shared, and re-used. The Exchange Management Shell has over 375 unique commands to manage features of Microsoft Exchange Server 2007.[19]
  • "Unified Messaging": Lets users receive voice mail, e-mail, and faxes in their mailboxes, and lets them access their mailboxes from cell phones and other wireless devices. Voice commands can be given to control and listen to e-mail over the phone (and also send some basic messages, like "I'll be late") 
  • Increased database maximum size limit: Database size is now limited to 16TB per database[20] 
  • Increased maximum storage groups and mail databases per server: 5 each for Standard Edition (from one each in Exchange Server 2003 Standard), and to 50 each for Enterprise Edition (from 4 groups and 20 databases in Exchange Server 2003 Enterprise). 
  • Configure Outlook Anywhere: Formerly known as RPC over HTTP provides external access to Microsoft Exchange Server 2007 for users. This also provides external URLs for Exchange services such as the Availability service and offline address book.