Choose the primary disadvantage of using a third party mail relay.

A.
A third party mail relay restricts the types of e-mail that maybe sent.

B.
A third party mail relay restricts spammers from gaining access.

C.
Spammers can utilize the third party mail relay.

D.
A third party mail relay limits access to specific users.

Explanation:

Using a third party email relay can put you in an advantage of getting unnecessary spam. Anyone
on the internet can relay an unsolicited email through an SMTP server, and the message will
appear to be legitimate coming from the email server, and it makes it much more difficult to trace
the spammer.