Design Variations and Considerations
- For real-time journaling, the journal message is sent for further processing at the same time the actual electronic message is being sent. For periodic journaling, the journal message is stored in a secure, local storage area before being archived at the enterprise level on a periodic basis, typically after business hours. The processing of journal messages after their creation also varies. A journal message may be forwarded in real-time directly to an archival and storage system, where any storage system processing may then take over. Alternatively, a journal message may be forwarded in real-time to a journaling mailbox, and then retrieved from the journaling mailbox with periodic extractions to the archival system, where any archival system processing would then take over.
- Rule based selective journaling is also well known and in use. With rule-based selective journaling, electronic messages are only journaled if they pass a specific set of rules created by an administrator, possibly relating to specific senders/recipients, keywords, or subjects of the message.
- When a journaling message uses the same transport format as normal communications, the same infrastructure can be used to transport the journaling message to a preferred destination. In such cases, journaling messages should contain an identifier indicating they are a journaling message and not a normal communication. This will prevent journaling loops from occurring when multiple mail servers are in use, as a second mail server might receive the journaling message before it reaches the journaling storage destination.
Read more about this topic: Electronic Message Journaling
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