By default, the NetBackup Client Service uses "Local System" account to log on as. A different account is required for the following operations: MAPI mailbox and public folder items backups (Exchange 2007 and earlier) and any operations that use Granular Recovery Technology (GRT).
Change the service account to the Windows domain account that you previously created. To change this account, you must have administrator group privileges.
See Configuring the NetBackup service account (Exchange 2010).
See Configuring the NetBackup service account (Exchange 2007).
See Configuring the NetBackup service account (Exchange 2003).
To configure the log on account for the NetBackup Client Service
If Local System account is not selected as the Log on as account, proceed with step 8.
Provide the name of the user account that you created for the NetBackup Client Service.
See Configuring the NetBackup service account (Exchange 2010).
See Configuring the NetBackup service account (Exchange 2007).
See Configuring the NetBackup service account (Exchange 2003).
The account must include the domain name, followed by the user account, domain_name\account. For example, recovery\netbackup.