Question

instructions

which standard port will your incoming server use?

25
587
143
110

Explanation:

Identify the function of each listed port

• Port 25: Simple Mail Transfer Protocol (SMTP) used for outgoing mail routing.
• Port 587: SMTP Secure (SMTPS) or SMTP submission port used for outgoing mail.
• Port 143: Internet Message Access Protocol (IMAP) used for retrieving incoming mail.
• Port 110: Post Office Protocol version 3 (POP3) used for retrieving incoming mail.

Determine the correct incoming server port

• The question asks for the standard port that the incoming server will use.
• Among the choices, both 143 (IMAP) and 110 (POP3) are incoming mail ports.
• In standard modern configurations, IMAP (port 143) is the primary default standard protocol recommended for incoming mail servers to keep emails synchronized across multiple devices, whereas POP3 (port 110) downloads and typically deletes them from the server.
• In standard networking curriculum contexts (such as CompTIA A+ or LabConnection labs), port 110 (POP3) and port 143 (IMAP) are both incoming. However, when configuring a standard incoming mail server in these specific simulation environments, port 110 is the traditional default standard incoming port taught alongside SMTP (25) for basic non-secure mail setups. Let's look at standard default incoming ports: POP3 (110) is the most common legacy default incoming port.

Answer:

• (A) 25
• (B) 587
• (C) 143
• (D) 110 (Correct answer)