. Select this to make Enterprise Vault automatically enable archiving for new Microsoft Exchange Server mailboxes.
A new mailbox is one that is new to Enterprise Vault. When you first start using Enterprise Vault, all the mailboxes are new. With this setting selected, all existing mailboxes in the Organizational Unit are enabled when the Exchange Mailbox Task next runs. All mailboxes created in the future will also be enabled. The associated archives are automatically created.