Summary
Extended Protection enhances the existing authentication functionality in Microsoft Exchange Server to help mitigate authentication relay or "man in the middle" attacks. To safeguard servers against authentication relay attacks, the Extended Protection feature of Windows authentication will now be supported on servers that run Exchange Server.
For more information about this change, see Exchange Server Support for Windows Extended Protection.
To run scripts for supporting and troubleshooting Microsoft Exchange Server, see Microsoft Exchange Server Support Scripts.
References
Learn about the terminology that Microsoft uses to describe software updates.