Question

用英语回答下列问题

please explain how does the e-mail system work.
并配上中文翻译

Answer 1

E-mail the working process of the follow client/server model. Each email sent to involve the sender and receiver, send form client, and the receiving party constitutes the server, which contains numerous customers through E-mail. The sender through the mail client program that will edit good email server (SMTP server to the post office) message. The post office server recognition, and the address of the receiver to manage the address of the mail server (POP3 server) send messages. Mail server general news in the receiver's mailbox within and inform receiver with new mail arrives. The receiver through the mail client connect to server, will see the server notice, and opened his E-mail address to check E-mail.
Usually Internet on individual users cannot directly receive E-mail, but through the application of an ISP host by email, ISP host is responsible for receiving E-mail. Once a user's E-mail coming, ISP host will move mail to a user's E-mail address within, and notify users have a new mail. Therefore, when sending an email to one another customer, E-mail first from the user computer sending to ISP host, then to Internet, then to the recipient's ISP host, finally to the recipient's personal computer.电子邮件的工作过程遵循客户-服务器模式。每份电子邮件的发送都要涉及到发送方与接收方，发送方式构成客户端，而接收方构成服务器，服务器含有众多用户的电子信箱。发送方通过邮件客户程序，将编辑好的电子邮件向邮局服务器（SMTP服务器）发送。邮局服务器识别接收者的地址，并向管理该地址的邮件服务器（POP3服务器）发送消息。邮件服务器识将消息存放在接收者的电子信箱内，并告知接收者有新邮件到来。接收者通过邮件客户程序连接到服务器后，就会看到服务器的通知，进而打开自己的电子信箱来查收邮件。
通常Internet上的个人用户不能直接接收电子邮件，而是通过申请ISP主机的一个电子信箱，由ISP主机负责电子邮件的接收。一旦有用户的电子邮件到来，ISP主机就将邮件移到用户的电子信箱内，并通知用户有新邮件。因此，当发送一条电子邮件给一另一个客户时，电子邮件首先从用户计算机发送到ISP主机，再到Internet，再到收件人的ISP主机，最后到收件人的个人计算机。