Brick Level = Mailbox Backups
Since MS didn't provide an API for this, Veritas came up with the following Kludge in response to customer demands for this capability
Logon to Outlook as the BackupExec Service accout
Connect to the first selected mailbox
Open and Read each item in the mailbox via standard MAPI calls
connect to the next selected mailbox ...
As such, you MUST have Outlook (or some other MAPI client) installed on the BackupExec media server
See http://seer.support.veritas.com/docs/249456.htm
(FWIW, I haven't placed a BackupExec media server on a database server of any kind since v7.2)