Which three statements about SMTP are true? (Choose three.)
A. SMTP uses TCP port 25.
B. The POP protocol is used by the SMTP client to manage stored mail.
C. The IMAP protocol is used by the SMTP client to send email.
D. The mail delivery agent in the SMTP architecture is responsible for DNS lookup.
E. SMTPS uses SSL and TLS.
F. SMTP uses TCP port 587.
