What is SMTP (Simple Mail Transfer Protocol) in Computer Networks?

1.	What is SMTP (Simple Mail Transfer Protocol) in Computer Networks?
Answer» Email is quickly becoming one of the most VALUABLE SERVICES available on the internet. SMTP is the most used technique for transferring mail from one user to ANOTHER over the internet. SMTP is a push protocol that is used to transmit mail. It is an application layer protocol. The client who wants to send the email establishes a TCP connection with the SMTP server and then sends the email VIA it. The SMTP server is always set to listen. The SMTP process establishes a connection as soon as it detects a TCP connection from any client. The client process sends the letter immediately after SUCCESSFULLY establishing a TCP connection.

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