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Post Office Protocol 3 (POP3)
Post Office Protocol (POP) is a standard protocol for receiving email. POP is
a client/server protocol in which email is received and held for you by your
Internet server. When you read your mail, all of it is immediately
downloaded to your computer and no longer maintained on the server. POP3
is built into the Netscape Navigator and Microsoft Internet Explorer
browsers.
POP can be thought of as a store-and-forward service. Another protocol,
Internet Message Access Protocol (IMAP), can be thought of as a remote file
server.
POP and IMAP deal with receiving email from your local server; Simple
Mail Transfer Protocol (SMTP) is a protocol for transferring email between
points on the Internet. You send email with SMTP and a mail handler
receives it on your recipient's behalf. The mail is then read using POP or
IMAP.
See also "Internet Message Access Protocol (IMAP)" on page 263 and
"Simple Mail Transfer Protocol (SMTP)" on page 270.
PPP
See Point-to-Point Protocol.
PPPoE
See Point-to-Point Protocol over Ethernet.
RAID
See Redundant Array of Independent Disks (RAID)
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