Message journaling saves copies of the following types of messages when the Microsoft Exchange Server is configured correctly:
Copies of the following types of messages are not saved:
Messages are captured when they first enter a Microsoft Exchange Server that is configured for message journaling. If a message is sent within a Microsoft Exchange Server organization, the message is copied when it is sent. Another copy is not made when the message is received.
If message journaling is configured at the server level, a message is copied when it is first sent from or received by the server. If message journaling is configured at the site level, a message is copied when it is first sent or received within the site. If message journaling is configured at the organization level, the message is copied when it is first sent or received within the organization.