Which statement about SMTP is true?
A. SMTP uses UDP 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 retrieve and manage stored email.
D. The mail delivery agent in the SMTP architecture is responsible for DNS lookup.
E. SMTP uses TCP port 20.
Which statement about SMTP is true?
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Which statement about SMTP is true?
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