Earlier today the Exchange CXP team released Update Rollup 4 for Exchange Server 2010 SP1 to the Download Center.

This update contains a number of customer-reported and internally found issues since the release of RU1. See 'KB 2509910: Description of Update Rollup 4 for Exchange Server 2010 Service Pack 1' for more details. In particular we would like to specifically call out the following fixes which are included in this release:

2519359 Unable to Create a 'Reply With' Rule on Public Folders Even With Owner and Send As Permissions
2394554 Generating DSN fails if original mail uses non-support encoding charset.
2490134 Outlook 2007 does not deliver "Delayed Delivery" Messages against an Exchange 2010 Server in Online mode with any additional Transport loaded in the Outlook Profile
Some of the above KnowledgeBase articles are not replicated/live at the time of writing this post. Please check back later in the day if you can't reach them.

Update Rollup 5 for Exchange Server 2010 Service Pack 1 is currently scheduled to release in August 2011.

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