多重安全機制在電子郵件系統中的應用

摘要：分析了當前企業電子郵件系統運作中面臨的垃圾郵件、開放性中繼和流動辦公帶來的非法使用等安全隱患。有針對性地介紹了若干關鍵技術——限制轉發、主機過濾和SMTP身份認證。最終在Linux平臺下制定了一套支持多重安全機制的跨域郵件系統的解決方案。

關鍵詞：垃圾郵件；開放性中繼；限制轉發；主機過濾；身份認證

Application of Multi-safety-mechanism in E-mail System

Zhang Yingchun

（Department of Computer， Shanghai Technical Institute of Electronics and Information， Shanghai， 201411， China）

Abstract：The hazards in current enterprise e-mail system including spam， open relay and unauthorized accessing was analysed. Some key techniques——limit forwarding， host filtering and identity authentication——were pertinently introduced. Finally， a multi-domain solution of an e-mail system supporting multi-security-mechanism was formulated on Linux.

Keywords：spam; open relay; limit forwarding; host filtering; identity authentication

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