With the newer versions of Backup Exec and Exchange 2007, Granular Recovery Technology (GRT), a requirement of the Microsoft Exchange Server MAPI Client and Collaboration Data Objects needs to be downloaded and installed on the Exchange/Media server. Microsoft has updated the Mapi and CDO to 1.2.1 to include Windows Server 2003 and Windows Server 2008. 64bit servers have no problem installing.

Link to download.

Backup Exec by default will report a failed backup if corrupt files are encountered. Backup Exec also sees open files ie. QuickBooks databases that are open when the backup is running as a corrupt file. If you want to disable this in Backup Exec, go to regedit and modify the following registry entry from 1 to 0: Fail Jobs on Corrupt Files

HKEY_LOCAL_MACHINE\SOFTWARE\VERITAS\Backup Exec\Engine\Backup

http://seer.entsupport.symantec.com/docs/193940.htm

I recently came across a client’s backup that was completing successfully daily but not flushing the transaction logs for Exchange as it should.  In the job properties of Backup Exec, the Exchange section declares that it will perform a full backup and flush the comitted logs but it simply never happens.

After some research, Veritas article 280659 had the answer…and it was a simple one.  In the job properties, review the options under Advanced Open File and make sure the option “Process Logical Volumes for backup one at a time” is not checked.   As its explained in the article, if this is unchecked, Backup Exec will use a different open file option (VSS) for the Exchange logs to allow it to flush them afterwards. 

Link

Symantec article reference: http://seer.support.veritas.com/docs/261457.htm

Reg key to change is: HKEY_LOCAL_MACHINE\SOFTWARE\VERITAS\Backup Exec\Engine\Backup\Fail Jobs on Corrupt Files
Change value to 0.