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