A mail server is a server that sends and receives emails. The main components of a mail server are as follows:
- Mail Transport Agent (MTA) is responsible for transporting the mail between mail servers.
- Mail Delivery Agent (MDA) is responsible for delivering the mail from the server into a user's inbox.
- Mail User Agent (MUA) is responsible for providing a platform for composing and reading emails.
Additionally, the mail server utilizes the following protocols:
- Simple Mail Transfer Protocol (SMTP) uses port 25 and powers the MTA in transferring the mail between servers.
- Post Office Protocol (POP) uses port 110 and is responsible for downloading emails from the server to the user's local computer.
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