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Dalam komputasi, Post Office Protocol (POP) adalah protokol standar Internet lapisan aplikasi yang digunakan oleh klien email untuk mengambil email dari server email. POP versi 3 (POP3) adalah versi yang umum digunakan, dan bersama dengan IMAP, protokol paling umum untuk pengambilan email.
POP3 (Post Office Protocol version 3) adalah protokol yang digunakan untuk mengambil surat elektronik (email) dari server email. Protokol ini erat hubungannya dengan protokol SMTP di mana protokol SMTP berguna untuk mengirim surat elektronik dari komputer pengirim ke server.
- Purpose
- History
- Extensions and Specifications
- Session Example
- Comparison with IMAP
- Related Requests For Comments
- See Also
- External Links
The Post Office Protocol provides access via an Internet Protocol (IP) network for a user client application to a mailbox (maildrop) maintained on a mail server. The protocol supports list, retrieve and delete operations for messages. POP3 clients connect, retrieve all messages, store them on the client computer, and finally delete them from the se...
The first version of the Post Office Protocol, POP1, was specified in RFC 918 (1984) by Joyce K. Reynolds. POP2 was specified in RFC 937 (1985). POP3 is the version in most common use. It originated with RFC 1081 (1988) but the most recent specification is RFC 1939, updated with an extension mechanism (RFC 2449) and an authentication mechanism in R...
An extension mechanism was proposed in RFC 2449 to accommodate general extensions as well as announce in an organized manner support for optional commands, such as TOP and UIDL. The RFC did not intend to encourage extensions, and reaffirmed that the role of POP3 is to provide simple support for mainly download-and-delete requirements of mailbox han...
The following POP3 session dialog is an example in RFC 1939: POP3 servers without the optional APOP command expect the client to log in with the USER and PASS commands:
The Internet Message Access Protocol(IMAP) is an alternative and more recent mailbox access protocol. The highlights of differences are: 1. POP is a simpler protocol, making implementation easier. 2. POP moves the message from the email server to the local computer, although there is usually an option in email clients to leave the messages on the e...
RFC 918– POST OFFICE PROTOCOLRFC 937– POST OFFICE PROTOCOL – VERSION 2RFC 1081– Post Office Protocol – Version 3RFC 1939– Post Office Protocol – Version 3 (STD 53)POP3 Sequence Diagram Archived 2015-05-03 at the Wayback Machine(PDF)Surel, surat elektronik, suratron, ratron, pos-el, atau pos elektronik ( Inggris: email, electronic mail) adalah sarana kirim mengirim surat melalui jalur jaringan komputer, misalnya internet . Lima langkah dalam proses pengiriman surel. Dengan surat konvensional, pengirim perlu membayar per pengiriman dengan membeli prangko.
The Post Office Protocol 3 (POP3) is a mail access protocol used by a client application to read messages from the mail server. Received messages are often deleted from the server . POP supports simple download-and-delete requirements for access to remote mailboxes (termed maildrop in the POP RFC's). [71]
POP3 protokol untuk mengambil surat elektronik dari server. IMAP sejenis dengan POP3 tetapi memiliki fitur yang lebih lengkap. Contoh Transaksi S = Server C = Klien C: (inisialisasi hubungan) S: 220 Wikipedia ESMTP server ready C: mail from: user@wikipedia.org S: 250 mail ok C: rcpt to: wikipedia@wikipedia.org S: 250 rcpt ok C: data
POP3 adalah protokol yang lebih lama yang didesain untuk digunakan pada satu komputer saja. Tidak seperti protokol modern yang menggunakan sinkronisasi dua arah, POP3 hanya mendukung sinkronisasi email satu arah, hanya mengizinkan pengguna untuk mengunduh email dari server ke klien.
