What is SMTP Server ?
SMTP stands for Simple Mail Transfer Protocol, and it is a standard protocol used in the process of sending and receiving emails on the internet. SMTP servers are responsible for sending outgoing emails, and they work together with email clients (such as Outlook or Thunderbird) and other mail servers to ensure that emails are delivered to the intended recipients.
Here’s a brief overview of how SMTP works:
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Sending Emails: When you compose and send an email from your email client, the client communicates with an SMTP server to send the message.
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SMTP Server: The SMTP server takes the email from your email client and routes it to the recipient’s email server.
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Relay: The recipient’s email server then uses other protocols like POP3 (Post Office Protocol 3) or IMAP (Internet Message Access Protocol) for message retrieval.
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Delivery: The recipient can then retrieve the email using their email client.
SMTP operates on the TCP (Transmission Control Protocol) port 25 by default. There are also secure versions, like SMTPS (SMTP Secure) or the more modern STARTTLS, which adds a layer of encryption to the communication between the email client and the server.
It’s important to note that SMTP is used for sending emails only. To retrieve emails, different protocols such as POP3 or IMAP are used.
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