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Setting Up POP3 Client

What is POP3?

POP3 is the acronym for Post Office Protocol Version 3 which defines a method for mail retrieval.

POP3 clients will require 4 essential pieces of information in order to work, namely:

  • Incoming mail (POP3) server: pop.nus.edu.sg
  • Outgoing mail (SMTP) server: smtp.nus.edu.sg
  • Mail server user name: domain\your Exchange user name
  • Outgoing mail server user name: domain\your Exchange user name

For example, a staff of Computer Centre will have the following settings:

  • Incoming mail (POP3) server: pop.nus.edu.sg
  • Outgoing mail (SMTP) server: smtp.nus.edu.sg
  • Mail server user name: nusstf\ccetankh
  • Outgoing mail server user name: nusstf\ccetankh

To ensure secure communication for email, all email clients accessing NUSmail must connect via secure channel for all email communication. SSL connection is required for all POP3 and SMTP connection.

POP3 allows you to either

  • Leave messages on the server - this keeps a copy of your mail on the server so you can access your mail from any client that connects to the server
  • Remove messages from server - this downloads your mail to the local hard disk where your client resides and deletes the messages from the server. This will clear up your disk space on the server. Note that for this option the messages are not accessible from anywhere else except your local hard disk.

Limitations of POP3

  • Messages are not accessible from another client once they are downloaded to the local hard disk, therefore it is ideal when only one workstation is used for mail retrieval.
  • Not able to manage folders other than the Inbox folder
  • Not able to transfer only selected parts of a message (e.g. the text portion of a multimedia mail message)

 

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