CONTENTS Title Page Copyright Page Preface 1 Business Communication The Problems of Business Communication Before Computers Were Used Introducing Computers Current Computer-based Communications Systems Solving the Problems of Business Communication 2 MAILbus MAILbus Features MAILbus Components MAILbus Gateways MAILbus and User Agents MAILbus and Custom-built Components 3 International Standards and MAILbus International Standards MAILbus Meeting the Standards MAILbus Exceeding the Standards 4 Digital's MAILbus Products VAX Message Router The Transfer Service The Directory Service The Management Service More Information About Message Router VAX Message Router X.400 Gateway VAX Message Router/S Gateway VAX Message Router/P Gateway VAX Message Router Telex Gateway ULTRIX Mail Connection VAX Message Router VMSmail Gateway VAX Message Router Programmer's Kit 5 Setting up MAILbus Planning MAILbus Installing MAILbus Configuring MAILbus Tuning MAILbus 6 Non-mail Applications of MAILbus Glossary FIGURES 2-1 A Small, Departmental Messaging System 2-2 A World-wide Messaging System 2-3 An Electronic Messaging System 2-4 How a Message Reaches its Destination 3-1 The Message Handling System Model 3-2 A Multi-vendor Message Handling System 5-1 A Multi-vendor Messaging System