Multiple choice general knowledge science & technology

You are getting unwanted mails in your default outlook email client and you don’t want it. Which port will you ban if don’t want ANY mail?

  1. 443

  2. 139

  3. 110

  4. 80
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Port 110 is POP3 (Post Office Protocol v3), the standard protocol for receiving email. Blocking this prevents POP3 email clients from downloading mail. Note: Blocking only 110 is incomplete for blocking ALL email - you'd also need to block port 25 (SMTP), 143 (IMAP), and others. But 110 is a valid email port and the best answer among the options.

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