Jack is under the gun for configuring his company’s e-mail. He has already set up a mail server. Which of the following protocols must be enabled on a server for the clients to be able to download an e-mail message and read it?
  1. SNMP
  2. NTP
  3. SMTP
  4. POP3
Explanation
Answer - D - POP3 must be enabled on the server from which the client downloads e-mail messages and reads them.

Key Takeaway: SMTP and POP3 are often confusing when it comes to applications used for sending and receiving e-mail. SMTP is used to transmit e-mail messages. POP3 is a client/server protocol that receives e-mails and holds it on the server. This standard protocol (SMTP) is built into most popular e-mail products, such as Eudora and Outlook Express.
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