Which of the following protocols is related to the term open relay?
Which of the following protocols is related to the term open relay?
An open relay is a type of SMTP server configuration that allows anyone on the internet to send email through it. SMTP (Simple Mail Transfer Protocol) is the protocol used for sending emails, and an open relay occurs when an SMTP server is configured to accept and forward email from any sender to any recipient without authentication. This can be exploited for spam purposes, making SMTP the relevant protocol in this context.
A is correct
SMTP: https://www.techslang.com/definition/what-is-open-relay/