The following topics are new:

• Event ID 800 Does Not Include the Name of the User Who Ran the Get-MessageTrackingLog Cmdlet
  
  
• How to Configure Duplicate Message Detection in Exchange 2007
  
  
• How to Install Exchange 2007 SP1 and SP2 Prerequisites on Windows Server 2008 or Windows Vista
  
  
• Outlook Web Access Light Opens When a User Logs On to Exchange 2007 Outlook Web Access
  
  
• Users Receive an Error Message When They Try To Log On to Outlook Web Access Through the Client Access Server Role in Exchange 2007
  
  
• You Cannot Delete or Change E-Mail Messages That You Sent to a Mail-enabled Public Folder in Exchange 2007
  
  
• You Cannot Hide Distribution Group Membership in Exchange 2007
  
  
• You Cannot Reseed the Logs to a Passive Node on a CCR Cluster
  
  

The following topics have recently been updated:

• Configuring Public Folder Permissions
  
  
• Eseutil /D Defragmentation Mode
  
  
• How to Configure Named Properties and Replica Identifier Quotas for Exchange 2007 Databases
  
  
• IPv6 Support in Exchange 2007 SP1 and SP2
  
  
• Isinteg
  
  
• New High Availability Features in Exchange 2007 SP1
  
  
• Outlook Anywhere Client Connectivity Issue Because of TCP/IPv6
  
  
• Troubleshooting Free/Busy Information for Outlook 2007
  
  
• Understanding Journaling in a Mixed Exchange 2003 and Exchange 2007 Environment
  
  
• Understanding the Impact of Named Property and Replica Identifier Limits on Exchange Databases
  
  
• Users Receive Duplicate E-Mail Messages or DSN Messages After a CCR Cluster Fails Over Unexpectedly in Exchange 2007
  
  
• What Causes Exchange Disk I/O