Which of the following default port numbers need to be open on a firewall for a mail server to successfully send and receive mail? (Choose three.)
A) 22
B) 25
C) 53
D) 80
E) 110
F) 143
G) 161

Question

Quizplus · Accepted Answer

Ports 25, 110, and 143 are the default port numbers for SMTP, POP3, and IMAP, respectively. These ports need to be open on a firewall for a mail server to successfully send and receive mail.

Which of the Following Default Port Numbers Need to Be