SMTP is a protocol for receiving and sending emails. As a text-based protocol, users can communicate with a mail receiver by issuing command strings and supplying necessary data.
An SMTP only deals with plain text, hence the word ‘simple’ in its title. Graphics or fonts cannot be processed by it.
Want to know when SMTP was first introduced? Click next page.
Mail Transfer Agent (MTA) is used in collaboration with SMTP to ensure that an email is sent to the correctly intended recipient. The IP Address of the initial SMTP server needs to be known in order to send mail, since those outside the network will be unable to use it.
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