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POP3    
Version 3 of the {Post Office Protocol}.
POP3 is defined in {RFC 1081}, written in November 1988 by
Marshall Rose, which is based on RFC 918 (since revised as RFC
937). POP3 allows a {client} computer to retrieve {electronic
mail} from a POP3 {server} via a (temporary) {TCP/IP} or
other[?] connection. It does not provide for sending mail,
which is assumed to be done via {SMTP} or some other method.

POP is useful for computers, e.g. mobile or home computers,
without a permanent network connection which therefore require
a "post office" (the POP server) to hold their mail until they
can retrieve it.

Although similar in form to the original POP proposed for the
{Internet} community, POP3 is similar in spirit to the ideas
investigated by the {MZnet} project at the University of
California, Irvine, and is incompatible with earlier versions
of POP.

Substantial work was done on examining POP in a {PC}-based
environment. This work, which resulted in additional
functionality in this protocol, was performed by the {ACIS}
Networking Systems Group at {Stanford University}.

RFC 1082 (POP3 Extended Service) extends POP3 to deal with
accessing mailboxes for {mailing lists}.

(1997-01-09)


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英文字典中文字典相关资料:


  • What is POP3 (Post Office Protocol Version 3)? - GeeksforGeeks
    POP3 is the updated version of POP What is POP3? POP 3 stands for Post Office Protocol Version 3 POP3 protocol is used to provide access to the mail inbox that is stored in the email server POP3 protocol can download and delete messages
  • Post Office Protocol - Wikipedia
    The KPOP protocol is based on the POP3 protocol – differing in that it adds Kerberos security and that it runs by default over TCP port number 1109 instead of 110
  • What is the difference between POP and IMAP? - Microsoft Support
    POP3 is an older protocol that was originally designed to be used on only one computer Unlike modern protocols that use two-way synchronization, POP3 only supports one-way email synchronization, only allowing users to download emails from a server to a client
  • What Are Email Protocols - POP3, SMTP and IMAP - SiteGround
    What is POP3? The POP3 abbreviation stands for Post Office Protocol version 3, which provides access to an inbox stored in an email server It executes the download and deletes operations for messages Thus, when a POP3 client connects to the mail server, it retrieves all messages from the mailbox
  • Post Office Protocol Version 3 (POP3): Complete guide - Twilio
    Learn how POP3 works, what ports it uses, and why it matters for your email Our complete guide breaks down this must-know protocol in simple terms
  • How to Set Up a POP3 or IMAP Account in Microsoft Outlook
    Here's how to hook up your email account to Outlook, using either POP3 or IMAP What are POP3 and IMAP? POP3 (Post Office Protocol 3) and IMAP (Internet Messaging Access Protocol) are two of the most common protocols for accessing email
  • Gmail Says Goodbye to Gmailify and POP3: What Users Need to Know
    Since Gmail’s early days, users could set the platform to “pull” emails from other servers using the POP3 protocol This made Gmail a convenient web-based home for every email identity a person
  • POP3 Explained [2026] - Mailtrap
    What is POP3? POP3, or Post Office Protocol version 3, is an Internet standard protocol that retrieves email messages from a server over a TCP IP connection It’s the third version of the Post Office Protocol 3, which is defined in RFC 1939
  • What is POP3 (Post Office Protocol 3)? - TechTarget
    Post Office Protocol 3, or POP3, is the most commonly used protocol for receiving email over the internet This standard protocol, which most email servers and their clients support, is used to receive emails from a remote server and send to a local client
  • What Is Post Office Protocol (POP3)? Security Guide | Huntress
    Post Office Protocol 3 (POP3) is a simple, widely used email retrieval protocol that downloads mail from a server to a local device For cybersecurity teams, POP3 is double-edged: convenient for users, risky for unencrypted traffic and decentralized storage





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