某用户的E-mail地址是Lu@online.sh.cn,那么它的邮件服务器域名是()。
Internet上所有电子邮件用户的E-mail地址都采用同样的格式:用户名@主机名。
E—mail地址的格式为()
下列E-mail地址合法的是()。
电子邮件E-mail系统采用的简单邮件传输协议是()。
电子邮件的英文是E-mail,又称计算机报文系统。
Which three situations will trigger an e-mail to be flagged as spam if a branch SRX Series device has been properly configured with antispam inspection enabled for the appropriate security policy? ()(Choose three.)
An administrator needs to configure a server to restrict mail traffic to an application server for security reasons. Which of the following techniques can be used to manage this?()
You add a particular e-mail address to the Blocked Senders list in the Microsoft Windows Mail application. You still receive messages from this e-mail address. You need to prevent the receipt of all e-mail messages from this e-mail address. What should you do?()
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