(ISC)2
SSCP · Question #1055
Which of the following ports does NOT normally need to be open for a mail server to operate?
The correct answer is C. Port 119. Port 119 is normally used for the Network News Transfer Protocol. It is thus not need for a mail server, which would normally listen to ports 25 (SMTP), 110 (POP3) and 143 (IMAP).
Submitted by kwame.gh· Apr 18, 2026Network and Communications Security
Question
Which of the following ports does NOT normally need to be open for a mail server to operate?
Options
- APort 110
- BPort 25
- CPort 119
- DPort 143
How the community answered
(25 responses)- B8% (2)
- C88% (22)
- D4% (1)
Explanation
Port 119 is normally used for the Network News Transfer Protocol. It is thus not need for a mail server, which would normally listen to ports 25 (SMTP), 110 (POP3) and 143 (IMAP).
Topics
#Network Ports#Email Protocols#Mail Server Operations#SMTP/POP3/IMAP/NNTP
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