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[8] J. B. Postel, “SIMPLE MAIL TRANSFER PROTOCOL”, RFC821, August 1982.
[9] W. Zhang, “Linux Virtual Server for Scalable Network Services”, Linux Symposium; Ottawa, Canada, 2000.
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[11] Fedora Project, http://fedora.redhat.com/.
[12] High-Availability Linux Project, http://www.linux-ha.org/.
[13] Linux Virtual Server Project, http://www.linuxvirtualserver.org/.
[14] The Postfix Home Page, http://www.postfix.org/.
[15] Postal - SMTP and POP benchmark program, http://www.coker.com.au/postal/.
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[22] 賴守全、謝木政、郭文曲,“具自我保護機制之多網域叢集式電子郵件系統”,台灣網際網路研討會,pp. 1058-1063,2004年。
[23] 謝仁瀚、廖享進,“具備容錯機制及多連外線路之叢集式郵件伺服系統”,台灣網際網路研討會,pp. 39-44,2003年。