MailMarshal Exchange is an email filter that plugs directly into your Exchange Server and performs content security scanning of new messages on the server.

MailMarshal Exchange retrieves messages from the Exchange Advanced Queue before they reach the Exchange message store. This architecture eliminates conflicts that can arise when using products that retrieve messages using MAPI.
Mailmarshal Exchange Operation
MailMarshal Exchange works with Exchange 2000 and Exchange 2003.
For more detailed technical information, please see the MailMarshal Downloads page.