Key changes

• TechNet: What’s new in Exchange 2007 SP3
• Support for Exchange 2007 on
  • Windows 2008 R2 (ehlo post on this)
  • Windows 7 (client tools only)
• End user password support for expired\1st logon change flags (disabled by default, here’s how to enable) that detects this and redirects the user to a new page
• AD Schema changes

Download from here

Release Notes