ELOxc is activated via the server license in ELOam.

If the number of available licenses is exceeded, ELOxc will continue to operate to a maximum of 20 percent above the configured threshold. If usage exceeds this threshold, ELOxc is deactivated and cannot be used until sufficient licenses are available. One way to do this is to re-use licenses that are automatically freed up after a certain period or to register a new license with a new serial number. You need to select the user identity to process Exchange messages.

Please note: Group mailboxes such as "Journal recipients" or "Shared mailboxes" are always fully resolved within the scope of automatic licensing in order to determine the license usage. For example, if there are 20 mailboxes in a mailbox database with one journal recipient, 20 licenses will be used. The same applies for "Shared mailboxes". If "Shared mailboxes" are also associated with a "Journal recipient", the delegates of a "Shared mailbox" also use one license each in addition to the user mailboxes of the journal.

Premium journaling is an exception since it is based on transport rules and not a mailbox database. In this case, there is no limit. All address data found in the catalog are licensed.