Your Linux email server runs on a non-standard port number, port 2525. Which statement is true?

A.
IPS cannot scan that traffic for SMTP anomalies because of the non-standard port number. You must reconfigured the server to run on port 2.

B.
To apply IPS to traffic to that server, you must configured FortiGate SMTP proxy to listen on port 2525

C.
IPS will apply all SMTP signatures, regardless of whether they apply to clients or servers.

D.
Protocol decoders automatically detect SMTP and scan for matches with appropriate IPS signature.