Объявления

A Simple Mail Transfer Protocol (SMTP) server is a computer program or software that handles the sending, receiving, and routing of email messages over a network. It is an essential component of the email communication system, responsible for delivering messages from the sender to the recipient's email server.

When you send an email, your email client (such as Outlook or Gmail) communicates with your SMTP server to initiate the sending process. The SMTP server then verifies the sender's credentials and accepts the outgoing message. It then performs various tasks, including checking the recipient's domain, routing the message to the appropriate server, and handling any necessary encryption or authentication.

SMTP servers use a set of predefined rules and protocols to transfer email messages. These rules define how the servers communicate, how they validate sender and recipient addresses, and how they handle errors or delivery failures. The most commonly used protocol for email transmission is the Simple Mail Transfer Protocol (SMTP), but variants such as Extended SMTP (ESMTP) also exist to enhance functionality.

SMTP servers are typically configured by network administrators or email service providers. They can be set up as standalone servers or integrated into a larger email infrastructure. In addition to sending and receiving messages, SMTP servers often include features such as spam filtering, virus scanning, and message queuing to ensure reliable and secure email delivery.
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