Which three situations will trigger an e-mail to be flagged as spam if a branch SRX Series device has been properly configured with antispam inspection enabled for the appropriate security policy? （）(Choose three.)
A. The server sending the e-mail to the SRX Series device is a known open SMTP relay.
B. The server sending the e-mail to the SRX Series device is running unknown SMTP server software.
C. The server sending the e-mail to the SRX Series device is on an IP address range that is known to be dynamically assigned.
D. The e-mail that the server is sending to the SRX Series device has a virus in its attachment.
E. The server sending the e-mail to the SRX Series device is a known spammer IP address.
参考答案：ACE
