Design And Implementation Of Email Server Management And Anti-spam System

Email is a very popular application in Internet.It has brought our life tremendous changes since it appeared 30 years ago.Its cheapness and convenience are deeply enjoyed.Since free Email was available,people have got used to sending messages by Email.But spam seriously disturbs normal use of email.Statistically,over 50% mails are spam,some of them even carry viruses,which cause great damages to computer security.Spam not only violates legal rights of Email user,but also leads to billions of losses on national economy.There are more attentions paid to mail security and it's important to improve management of email server.This paper implements a email server management and anti-spam system based on the knowledges of technologic causes of spam and email service.Concretely,the main work of this paper is as follows:(1) Implements anti-spam of email serverAccording to analysises of what causes spam and anti-spam technologies,we adopt closing mail-relay,smtp anthentication,black and white list to implement anti-spam.(2) Implements a B/S email server management systemB/S is a very popular management module.All the management work is implemented by browser.Chinese management interface,clear interface style make management very easy.Guarantees transmission security by SSL and access security by role based access control.(3) Implements security audit of email server log...