SMTP relay: The process of transferring an email from one mail server to another. In this context, the term “relay” describes the act of passing along the email. SMTP (Simple Mail Transfer Protocol) is the protocol used for sending email across the internet. While SMTP relays are essential for email delivery, they can be exploited by spammers if not properly secured, leading to a mail server being used to send unsolicited emails.
Categories: CC D4: Network Security | CCSP D3: Cloud Platform and Infrastructure Security | CISM D3: Information Security Program | CISSP D4: Communication and Network Security | Security+ D3: Security Architecture | SSCP D6: Network and Communication Security
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