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CompTIA Mobility+ Exam Prep

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A user complains their POP3 email is not working correctly. When going over their server settings, you notice the following port settings: Incoming Mail - Port 143, Outgoing Mail - Port 587. What is most likely the issue?
  1. The incoming mail port should be set to 110.
  2. The outgoing mail port should be set to 25.
  3. The incoming mail port should be set to 25.
  4. There is not issue with the ports.
Explanation
Answer: A - The most likely issue with the server port settings is that the incoming mail port should be set to 110.

Key Takeaway - POP3 uses port 110, and therefore if using that protocol, the port needs to be set correctly. Port 143 is the port for IMAP connections. Although port 25 is a correct port for SMTP, many newer servers are using an SMTP relay through submission port 587, which provides more outbound mail security (and backup-since you are sending through the remote server).
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