网络简单邮件传输协议(Simple Mail Transfer Protocol)；发送邮件服务器；发送服务器
英汉释义
n.
1.简单邮件传输协议
英英释义
na.
1.Simple Mail Transfer Protocol: the main method of sending e-mails on the Internet, consisting of rules for how programs sending e-mail should work with programs receiving e-mail