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
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
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