You can download the Update Rollup 3 (thanks, Greg for helping here) for Exchange Server 2007 SP2 (x86/x64). It resolves issues that were found in Exchange Server 2007 since the software was released. This update rollup is highly recommended for all Exchange Server 2007 customers.

Per, some highlights of the product improvements and critical bug fixes were “…

Also per TechNet, the Update Rollup 3 for Exchange Server 2007 fixes the following issues:




An integer is added to the end of the legacyExchangeDN attribute of a newly created mailbox in Exchange 2007




The attachment is not displayed when you use Outlook 2003 to open an e-mail message that contains an attachment




Error message when the sender or the receiver of a meeting request has a double-byte character set (DBCS) display name in Exchange Server 2007: "The requested property was not found"




Error message when a user tries to open a forwarded message to accept or to deny a resource request in Exchange Server 2007: "Cannot open the free/busy information"




You receive a 5.2.0 non-delivery report (NDR) message when you send an e-mail message to an Exchange 2007 server that is running the Isinteg.exe tool in a dismounted mailbox store




DBCS characters are converted into two question marks in a forwarded e-mail message in Exchange 2007




Error message when you run the Test-ExchangeSearch cmdlet across domains in an Exchange 2007 environment: "The operation could not be performed because of a service"




A POP3 mail client may receive an error code, and event ID 1009 is logged on an Exchange 2007 mail server




The synchronization session of the mobile device fails, and you receive error code "0X85010015" when you try to synchronize a mobile device by using Exchange ActiveSync in Exchange Server 2007




The outgoing message always displays the name of the sender even though the administrator configured the message to hide the name in Exchange Server 2007




Certain IMAP clients cannot open the bodies of e-mail messages when users access their mailboxes on an Exchange Server 2007 server




A user cannot log on when the user accesses the mailbox of an Exchange 2003 IMAP4 back-end server through an Exchange 2007 server that is serving in a CAS role




The nickname of a mail user must be unique in a forest if you use the original release version of Exchange 2007




You cannot move a mailbox across forests in an Exchange 2007 organization




The Availability service may use a large amount of memory and the corresponding w3wp.exe process has a high memory usage in Exchange Server 2007