构建一个大容量用户、安全的电子邮件系统

Design and Implementation of A Sescure Mail Server which Supports A Great Number of Users

提出在Linux系统上以Postfix为SMTP服务器、CYRUS为POP/IMAP服务器、A-PACHE为WEB服务器和MYSQL为后台数据库构建一个支持大量用户的邮件系统的方案,并实现其Web Mail系统.在贝叶斯方法的基础上,设计出一个电子邮件过滤器,并给出实现的系统结构.针对日益泛滥的邮件病毒问题,提出一套可行的病毒防护方案.

A method is presented to overcome the shortcoming of the usual email system which can not support a great number of users. Postfix is used as smtp server, cyrus is used as pop/imap server, apache is used as web server and mysql is used as database server on linux system in this project. With the javamail package and the technology of java, the web mail system of the mail server is implemented. In order to filter spam, the spam filtering system is designed which is based on Bayesian algorithm. An email virus protection scheme is proposed so that email virus can be detected and cleaned effectively.