"EXCHANGE\Administrator" might have insufficient permissions to the mailbox

OS

Windows 2003 and higher

Software

5.5.x.x und höher

Error message

"EXCHANGE\SYSTEM" might have insufficient permissions to the mailbox "EXCHANGE\Administrator" might have insufficient permissions to the mailbox

Cause

This message occurs when the named user does not have sufficient rights to access the content of all selected mailbxes. Mail Level Backup works as following:

1. The 'Online Backup Scheduler'-service runs using SYSTEM-rights.
   This service will start the backup task, and if possible will run as a Windows authenticated user (Administrator).
2. The backup task connects using the MAPI client to the Exchange server and then collects all new e-mails from the selected mailboxes.
3. The new e-mail will be downloaded to the temporary folder and then uploaded to the backup server.

Solution

Read chapters 4 & 5 of the Manual Exchange-Backup.