以maillog為回饋機制的spam mail阻擋系統

Abstract

郵件主機上的郵件記錄檔案maillog記載了詳細的連線記錄，看起來雜亂，但透過程式進行文字內容分析，抓取其中的spam來源ip，阻擋其下一次的連線，可減輕系統過濾程式的負擔。為避免誤判的情形，有必要設計使用者反應機制，系統定時將擋信清單寄給使用者，讓使用者檢查，如有誤判的情形，可立即回報給系統管理者，由管理者針對誤判的ip予以移除管制連線。

The maillog in Mail server describes the messages about mail’s log, it looks like bewilderment. But we can use program to filter the content, get the spam ip , and deny the ip at next connect. In this way, it can reduce the loading of the filter program. To avoid the filter program’s mistake, this system will mail the deny mail’s statistic to user. If user find the mistake, he can reply the mail to notify the system administrator. Then the administrator can determine to remove the rule.