You are installing a new Linux server, which will function as an e-mail server for your small business setup. Which of the following ports should you open on the host firewall?
A)120
B)280
C)125
D)143

Question

Quizplus · Accepted Answer

You should open port 143 on the host firewall.
Key Takeaway: E-mail applications use three protocols, namely: POP3, SMTP, and IMAP. Port 110 is used by the POP3 protocol, port 25 is used by the SMTP protocol, and port 143 is used by the IMAP protocol.

You Are Installing a New Linux Server, Which Will Function