Microsoft Exchange Mailbox Level (or brick-level) backups provide you with a way to archive your clients' mailbox data for long-term, granular restores. Emails, contacts, and calendar items can be restored on an individual basis, or in bulk, to provide flexibility when reinstating a user's email.
Mailbox Level backup sets are best used as a data-archiving utility to keep a record of the emails sent and received (as well as contacts and calendars) over a long period of time. Intronis do not recommend using Mailbox Level backups as a disaster recovery solution since restoring an entire information store via a Mailbox Level backup is much slower than restoring from an Information Store backup.
Mailbox Level backups are performed by a service account that uses Exchange Web Services to extract mail. If you have not set up this user account already, you will need to do so in order to perform backups successfully. Directions for doing this are here.
Additionally, there are a few special cases you should be aware of:
When backing up an Exchange 2007 instance with Mailbox Level backup, the backup software must be installed on a machine in the same domain as the Exchange server. This limitation does not hold for Exchange 2010 and up.
If the Exchange server is running Windows Server 2008 (non-R2), you may need to manually install Powershell 2.0.
Creating a Mailbox Level Backup Set
Log into the management portal and navigate to the computer account you want to add a Mailbox Level backup set to.
Go to the Backup tab and click on the Add Backup Set button below it.
Choose Exchange Mailbox Level as the backup set type from the left-hand side and give the backup set a name. Choose a backup destination and hit Next.
Enter the EWS URL for the Exchange instance you want to back up as well as the user logon name and password of the service account.If you do not know the EWS URL, you can find it by opening Exchange Management Shell and entering the following command:
In the Email: field, you must use a domain logon name in the format of an email address. The text after the @ symbol should be the same as found in the domain information in the System properties window (Win+Pause/Break or Control Panel > System). You can also confirm which domain name you should be used by opening Active Directory Users and Groups, finding the user you are trying to use, and looking at the Account Information tab. This will give the complete format to use.
Get-WebServicesVirtualDirectory | Select name,*url* | fl
We recommend you use the external URL but others may work.
Click Next to continue.
Select the mailboxes you want to back up and whether you want to automatically include newly created mailboxes in the backup set. Click Next when you are done making your selection.
Choose a schedule for the backups. Drag-and-drop the sticky notes, double-click to make new ones, or use the "Delete" key to delete a note. Hit Next when you are finished setting the schedule.
On the Settings page, specify where the temporary folder will reside and if Deleted Items, Spam, and/or Junk Email folders will be included in the backup. Click the Next button to continue.
The final page will give you a summary of the backup set you just configured. Click Create to finalize the backup set.