What equipment is required to successfully send and receive emails?

To be able to send and receive emails smoothly, the necessary equipment is a "mail server". A mail server is a device used to manage the sending and receiving of emails and forms the core of the email system.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

To be able to send and receive emails smoothly, the necessary equipment is a mail server.

[Analysis]

The working process of email follows the client-server model. The sending of each email involves the sender and the receiver. The sending method constitutes the client, and the receiver constitutes the server. The server contains the e-mail boxes of many users.

• The sender sends the edited email to the post office server (SMTP server) through the mail client program.

• The post office server identifies the recipient's address and sends the message to the mail server (POP3 server) that manages the address.

• The mail server will store the message in the recipient's email box and notify the recipient of the arrival of new mail.

• After the recipient connects to the server through the mail client program, he will see the server's notification and then open his or her e-mail box to check the mail.

Mail server introduction

The mail server is a device used to manage the sending and receiving of emails.

The mail server forms the core of the email system. Each recipient has a mailbox (mailbox) located on a certain mail server. His mailbox is used to manage and maintain email messages that have been sent to him. The typical journey of an email message is from the sender's user agent, to the sender's mail server, to the recipient's mail server, and then to the recipient's mailbox. When Bob wants to check the mail messages in his mailbox, the mail server storing the mailbox will authenticate him with the user name and password he provided. Alice's mail server also has to deal with the failure of Bob's mail server. If Alice's mail server cannot deliver mail messages to Bob's mail server immediately, Alice's server stores them in a message queue and tries to deliver them again later. This attempt is usually performed every 30 minutes or so: if the attempt fails after a few days, the server removes the message from the message queue and notifies the sender (ie Alice) with another email message.

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