CompTIA
JK0-019 · Question #235
An administrator notices SMTP traffic is being blocked by the company firewall. Which of the following ports should be opened?
The correct answer is A. 25. SMTPis an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. SMTP uses TCP port 25.
Networking concepts
Question
An administrator notices SMTP traffic is being blocked by the company firewall. Which of the following ports should be opened?
Options
- A25
- B53
- C110
- D443
How the community answered
(28 responses)- A82% (23)
- B4% (1)
- C11% (3)
- D4% (1)
Explanation
SMTPis an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks. SMTP uses TCP port 25.
Topics
#SMTP#port 25#firewall#email protocols
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