Which service is responsible for sending out mail?

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Multiple Choice

Which service is responsible for sending out mail?

Explanation:
SMTP is the service responsible for sending out mail. It handles the transfer of messages from a client to a mail server and between mail servers over the network. When you hit send, your mail client submits the message to an SMTP server, which then determines where to route the message by consulting DNS MX records to find the recipient’s mail server and delivering the message via SMTP. Retrieving mail from a mailbox is done with POP3 or IMAP, not SMTP. DNS helps locate mail servers but does not perform the actual sending of mail.

SMTP is the service responsible for sending out mail. It handles the transfer of messages from a client to a mail server and between mail servers over the network. When you hit send, your mail client submits the message to an SMTP server, which then determines where to route the message by consulting DNS MX records to find the recipient’s mail server and delivering the message via SMTP. Retrieving mail from a mailbox is done with POP3 or IMAP, not SMTP. DNS helps locate mail servers but does not perform the actual sending of mail.

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