If you are using the built-in MTA to process email in transparent mode, which two statements about FortiMail behavior are true? (Choose two.)

If you are using the built-in MTA to process email in transparent mode, which two statements about FortiMail behavior are true? (Choose two.)
A . MUAs need to be configured to connect to the built-in MTA to send email
B . If you disable the built-in MTA, FortiMail will use its transparent proxies to deliver email
C . FortiMail can queue undeliverable messages and generate DSNs
D . FortiMail ignores the destination set by the sender, and uses its own MX record lookup to deliver email

Answer: C,D