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POP
Last modified: Tuesday, May 13, 2003 

(1) Short for Post Office Protocol, a protocol used to retrieve e-mail from a mail server. Most e-mail applications (sometimes called an e-mail client) use the POP protocol, although some can use the newer IMAP (Internet Message Access Protocol).

There are two versions of POP. The first, called POP2, became a standard in the mid-80's and requires SMTP to send messages. The newer version, POP3, can be used with or without SMTP.

(2) Short for point of presence, an access point to the Internet. ISPs have typically multiple POPs. A point of presence is a physical location, either part of the facilities of a telecommunications provider that the ISP rents or a separate location from the telecommunications provider, that houses servers, routers, ATM switches and digital/analog call aggregators.

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For internet.com pages about POP . Also check out the following links!

Related Links

Message Access Paradigms and Protocols
This paper compares the Internet Message Access Protocol (IMAP) to the POP protocol in the context of online operation.

Yahoo!'s POP page
Yahoo!'s directory of information and documentation for POP.

related categories

Electronic Mail

Internet

Internet Access

related terms

Dial-Up Networking

e-mail

gigaPOP

IMAP

MTA

MUA

SMTP

SNMP


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