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    • 90. 发明授权
    • Mail server, electronic mail transmission control method for the mail server, and electronic mail system
    • 邮件服务器,邮件服务器的电子邮件传输控制方法以及电子邮件系统
    • US07765285B2
    • 2010-07-27
    • US10224396
    • 2002-08-21
    • Takeo YoshidaNaoki YamadaFumio Kitagawa
    • Takeo YoshidaNaoki YamadaFumio Kitagawa
    • G06F15/173
    • H04L51/14H04L63/083
    • In order to simplify prevention of unauthorized or malicious electronic mail transmission, a mail server comprises a password conversion table which shows registered correlation among user ID, a formal password, and a virtual password different from the formal password, both assigned to each user for user authentication by a general-purpose mail server. A user is informed of only a virtual password. When electronic mail having a virtual password and addressed to an outsider of a company is sent from a client PC, a password conversion processor converts the virtual password into a corresponding formal password with reference to the password conversion table, and the virtual SMTP server function processor sends the electronic mail now having the formal password to the general-purpose mail server. A user at a client PC cannot access the general-purpose mail server using a virtual password as the user is not authenticated using the virtual password.
    • 为了简化防止未经授权或恶意电子邮件发送的事件,邮件服务器包括密码转换表,其表示用户ID,正式密码和与正式密码不同的虚拟密码之间的登记关联,两者分配给用户的每个用户 由通用邮件服务器进行身份验证。 通知用户只有虚拟密码。 当从客户端PC发送具有虚拟密码并且发送给公司外部人员的电子邮件时,密码转换处理器将参考密码转换表将虚拟密码转换成相应的形式密码,虚拟SMTP服务器功能处理器 将具有正式密码的电子邮件发送到通用邮件服务器。 客户端PC上的用户无法使用虚拟密码访问通用邮件服务器,因为用户未使用虚拟密码进行身份验证。