In many states sending spam is illegal. Thus, the spammers have technique

s 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 rel

ays 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 servers relay component to send the e-mail back to the spammers occasionally.