Journaling Deployment Configuration
This basic deployment configuration involves simply placing the Barracuda Message Archiver off to the side of the Microsoft Exchange server. Email messages marked for journaling by the Exchange server are captured by the Barracuda Message Archiver before delivery to end users. In this deployment mode, historical emails already stored on the email server, prior to enabling journaling, can be imported into the Barracuda Message Archiver using Microsoft's Message Application Protocol Interface (MAPI).

SMTP Deployment Configuration
When journaling on your email server is not an available or practical option, you can use a combination of the Barracuda Message Archiver and the Barracuda Spam & Virus Firewall to capture both external and internal emails via SMTP. To capture messages sent from external Internet users, you can leverage the journaling capabilities of the Barracuda Spam & Virus Firewall to copy messages to your Barracuda Message Archiver. To capture messages sent from inside your organization, you can configure internal email clients to use the Barracuda Message Archiver as their SMTP relay that would be placed in front of your internal email server.