4. OFFLINE EMAIL SYSTEM DESIGN ARCHITECTURE

In this chapter the network architecture of the TCP/IP email system and DTN email system briefly presented. The approach of using a TCP/IP on a DTN email system discussed by presenting the idea of using TCP/IP mail system as a DTN mail system, analysis of the idea and abstraction of the TCP/IP mail system based on DTN. Then the application and network topology being used for this offline email system discussed. After that, network protocol and details of the design for this offline email system is discussed and then go on to a design solution for database synchronization.