This thursday, the Exchange CXP team released Update Rollup 1 for Exchange Server 2010 SP1 to the Download Center. The release of the rollup via Microsoft Update will happen on October 12th.

This update includes new fixes for the following server roles:

• Client Access
• Mailbox
• Edge Server
• Hub Transport

In particular the Exchange CXP team like to call out the following fixes which have been included in this release:

• 2028967 Event ID 3022 is logged and you still cannot replicate a public folder from one Exchange Server 2010 server to another
• 2251610 The email address of a user is updated unexpectedly after you run the Update-Recipient cmdlet on an Exchange Server 2010 server
• 978292 An IMAP4 client cannot send an email message that has a large attachment in a mixed Exchange Server 2010 and Exchange Server 2003 environment

Rollup 2 for Exchange Server 2010 Service Pack 1 is currently scheduled to release in early December.

Note for Forefront users

For those of you running Forefront, be sure you perform these important steps from the command line in the Forefront directory before and after this rollup's installation process. Without these steps, Exchange services for Information Store and Transport will not start back up. You will need to disable ForeFront via fscutility /disable before installing the patch and then re-enable after the patch by running fscutility /enable to start it up again post installation.