A mailbox group contains the selections on the Exchange Server that you want to archive.
A mailbox group consists of user mailboxes to which you want to assign the same archive settings. For example, you can add a single user to a mailbox group, or you can add the entire Exchange organizational unit to a mailbox group.
In the Archive job properties, in the Exchange settings, Backup Exec applies the archive settings sequentially to each mailbox group in the list. The archive settings of the first mailbox group that a mailbox is found in are applied to that mailbox.
The order of the mailbox groups is important. You should arrange the mailbox groups that have specific selections of users, groups, and distribution lists at the top of the list. Arrange the mailbox groups that contain the least specific selections at the bottom of the list. For example, a mailbox group that contains specific users should be listed before a mailbox group that contains a user group. In turn, a mailbox group that contains a user group should be listed before a mailbox group that contains the whole Exchange organizational unit. For example, you want to ensure that the correct archive settings are applied to the users that are in multiple groups.
You would arrange the following example mailbox groups in the order listed:
The Managers group contains individual user accounts and requires all messages to be archived.
The Some Users group contains some users in an organizational unit and requires messages to be archived from the last two months.
The All Users group contains the entire Exchange organizational unit and requires messages to be archived from the last six months.
You can select the following items to archive in a mailbox group:
You can create mailbox groups when you create an archive job for Exchange Server mailboxes, or at any time from the Archive Job Defaults dialog box.
Creating an Archiving Option archive job by setting job properties