What is SMTP Protocol in Networking?

What is SMTP Protocol in Networking? – With SMTP (Simple Mail Transfer Protocol), users can send an email to any address on the Internet. The SMTP protocol was developed in the early 1980s.

What is SMTP Protocol in Networking?

What is SMTP Protocol in Networking?

Today, the most popular service used to send Email is SMTP. Simple Server Simple Mail Transfer Protocol (SMTP) is used to send email from one server to another server over the Internet.

In short, SMTP is used to send an electronic post (E-Mail) between different hosts. SMTP is an Application Layer protocol. SMTP performs a TCP connection to send mail to a remote server.

How SMTP Works?

SMTP also listens to the port 25 while performing a TCP connection. The SMTP client connects via this port (25) to send mail. When the TCP connection is successful, the SMTP protocol Request and Response initiate two processes. In this process, sender and receiver mail addresses are determined. Later, when the SMTP server accepts mail addresses, the SMTP client sends the mail to the recipient.

In an Email, there must be a message header and a message body.

A host must be running the SMTP server to receive the Email. The user can receive Email messages using Post Office Protocol (POP) and Internet Message Access Protocol (IMAP).

The Mailbox program must be installed to send and receive e-mail on the user’s computer. A user with a mailbox program requires POP or IMAP configuration to send e-mail.

A user may not know that he is using the SMTP protocol when sending an E-mail. Nowadays, with the development of technology, sending and receiving e-mails has become very simple. Users with Internet access can easily send and receive E-mail using Web-based e-mail services.

Examples of web-based email services are Microsoft’s Outlook Service and Google’s Gmail services.

In short, a computer user can set up an Email Mail program to your computer and control all email traffic from a single location.

How to Configure Mail Settings in Windows 10?

For example, you can see the built-in Mail program on Windows 10 in the following image. With this mail program, multiple E-mail accounts are controlled and managed.

What is SMTP Protocol in Networking?

For example, to use SMTP, you can see the MAIL SERVER SMTP setting used to send an Email in the image below. You can also see the field of SMTP Outgoing. In short, SMTP is used to send an Email.

If you want to set up mail on your Windows 10 computer, you need to configure the Outgoing and Incoming fields in the image below. You can obtain the information here by contacting your Hosting company.

What is SMTP Protocol in Networking?

How to Configure SMTP Email Security in Windows 10?

SMTP Server security is a very important step. If the required security settings for SMTP are not configured, malicious people can send you fake E-mails on your behalf.

In general, the inbound and outbound server settings for the POP3 and IMAP settings are provided by the hosting company. If the hosting provider does not provide SMTP (25) port security, this will be a very critical situation for you.

If there is a vulnerability for SMTP 25, you can send E-mail with a few commands by connecting to the SMTP Server via Telnet at the CMD command prompt. If this vulnerability is not blocked by your Hosting company, this may cause bad results for you.

   Final Word

In this article, we have talked about what is SMTP and what works. And finally, we have examined how to configure mail settings on Windows 10. Thanks for following us!

If this article is helpful, please send us feedback by commenting. Thanks in advance, take care of yourself!

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