The Design And Implement Of An E_mail System Based On Qmail

Our world is stepping into information times, and Ejnail services are becoming one of the most important applications by their prompt and convenient characteristics. But the problems of Spam and E_mail virus are putting us into trouble. How to realize the safety in Ejnail system and architecture is the key to E_mail system services qualities. Being on guard Spam, most of products focus on their special configuration and rules filtering and not to draw some plains from the Ejnail own structure and its architectures and ignore their safe management. Aiming at these questions, I design an E_mail system bases on qmail.Firstly, the article analyize and research the following contents: From stability, safety fields analyze and compare to many E_mail server systems characteristic, then select a suitable Plan and mail server. Analyzing the architecture and operational principle about FreeBSD and qmail server. Analyzing relate basic protocols and structures in E_mail system.After analyzing the E_mail server and the architecture, I put forward to the designing scheme. According to the reliability, safety, management rules, I construct and configure E_mail system; integrate many kinds of Ejnail safety configuration and optimize the Ejnail server; then add some patches in it; finally I realize the Web mail functions, the administration and statistics rebuild.Being aim at Spam, I put forward to safety rebuild. Using perl language wrote a program based on rules, and I brought forward to rules combining to statistics methods.