On 16th April, the Exchange CXP team released Update Rollup 7 for Exchange Server 2007 SP3 to the Download Center.
This update contains a number of customer-reported and internally found issues since the release of SP3 RU6. See KB2655203: Description of Update Rollup 7 for Exchange Server 2007 Service Pack 3 for more details.
Note: Some of the following KB articles may not be available at the time of publishing this post.
We would like to specifically call out the following fixes which are included in this release:
Note that this fix will resolve the CAS to CAS OWA proxying incompatibility with Exchange 2010 SP2 RU1 as discussed here.
Read my favorites blogs:
Designing a backup less Exchange 2010 Architecture
Step by step guide for upgrading Active Directory from Microsoft Windows 2003 to Microsoft Windows Server 2008
Microsoft Exchange 2010 CAS Array – Steps and Recommendations
Appear Offline in Microsoft Office Communicator Server 2007
Microsoft Exchange 2010 Test cases
Microsoft Exchange Server 2010 Disaster Recovery