5.      SYSTEM IMPLEMENTATION

This chapter started by explaining the system platform and environment. Then the issues arise during implementation and system requirement is discussed. This offline email system is implemented by using suitable existing application to fulfill requirement of TCP/IP mail system working as a DTN mail system. The details of this offline email system implementation are discussed starting from the server computer, web server application, external IP address solution, mail server, mail client, explanation of the database synchronization process, related data for synchronization, database synchronization application and System Control Graphical User Interface (GUI).