A customer states that since the new firewall has been installed, the customer has not been able to send email. Which of the following ports on the firewall should be checked?

The correct answer is B. 25. See the full explanation below for the reasoning.

Question

A customer states that since the new firewall has been installed, the customer has not been able to send email. Which of the following ports on the firewall should be checked?

Options

A21
B25
C110
D443

How the community answered

(33 responses)

A
15% (5)
B
76% (25)
C
3% (1)
D
6% (2)

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