However, other ports, such as 465, 587, 2525 could also be used in different cases. This is called an SMTP handshake. The connection is carried out via an SMTP port, which is normally 25. A mail user agent (MUA), which can be your email client or an app, connects to the SMTP server of your domain (for example, ) to start the SMTP connection.Take a look at the basic steps of the email sending route and what role the SMTP server plays. Then it passes them on to another SMTP email server and relays them to the incoming mail server. An SMTP server receives emails from the email client. It functions following the Simple Mail Transfer Protocol (SMTP). What is an SMTP server?Īn SMTP server is a computer or an app that is responsible for sending emails. Today, we’re talking about a concept related to an outgoing mail server, known as an SMTP server. An email server is meant for dealing with emails.Īt the same time, we can break down email servers into two categories: outgoing and incoming. Servers are computers that handle specific services. ![]() ![]() When you click a button to send an email, your email client connects to the mail server. Under the hood, however, there is a complex system that drives emails from the sender to the recipient. Is it hard to send an email? From a user’s perspective, everything looks quite simple.
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