Question

What is greylisting?

A) E-mail messages are temporarily rejected so that
the sender is forced to resend.
B) E-mail messages are run through a strong set of
filters before delivery.
C) E-mail messages are sent through special secure
servers.
D) E-mail is sent directly from the local host to the
remote host, bypassing servers entirely.

Answer 1

Greylisting is a method used to prevent spam emails by temporarily rejecting them, forcing the sender to resend. It helps reduce the amount of spam in users' inboxes.

Step-by-step explanation:

Greylisting is a method used to prevent spam emails from reaching a recipient's inbox. When an email is received, the server temporarily rejects it by sending a 'soft bounce' error message. The sender is then forced to resend the email, and if it is a legitimate sender, the email will be accepted and delivered to the recipient's inbox. This technique helps to reduce the amount of spam that reaches users' inboxes.