In many states sending spam is illegal. Thus, the spammers have techniques to try and ensure that no one
knows they sent the spam out to thousands of users at a time. Which of the following best describes what
spammers use to hide the origin of these types of e-mails?

A.
A blacklist of companies that have their mail server relays configured to allow traffic only to their specific
domain name.

B.
Mail relaying, which is a technique of bouncing e-mail from internal to external mails servers continuously.

C.
A blacklist of companies that have their mail server relays configured to be wide open.

D.
Tools that will reconfigure a mail server’s relay component to send the e-mail back to the spammers
occasionally.