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Post Office Protocol

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Post Office Protocol
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Post Office Protocol
From Wikipedia, the free encyclopedia | This article does not cite any references or sources.
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (November 2007) Find sources: "Post Office Protocol" –news · books · scholar · images |

Internet Protocol Suite | Application Layer | BGP · DHCP · DNS · FTP · HTTP ·IMAP · IRC · LDAP · MGCP · NNTP ·NTP · POP · RIP · RPC · RTP · SIP ·SMTP · SNMP · SSH · Telnet ·TLS/SSL · XMPP ·(more) | Transport Layer | TCP · UDP · DCCP · SCTP · RSVP ·ECN ·(more) | Internet Layer | IP (IPv4, IPv6) · ICMP · ICMPv6 · IGMP ·IPsec ·(more) | Link Layer | ARP/InARP · NDP · OSPF ·Tunnels (L2TP) · PPP · Media Access Control (Ethernet, DSL, ISDN, FDDI) ·(more) | This box: view • talk • edit |
In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over aTCP/IP connection. POP and IMAP (Internet Message Access Protocol) are the two most prevalent Internet standard protocols for e-mail retrieval. Virtually all modern e-mail clients and servers support both. The POP protocol has been developed through several versions, with version 3 (POP3) being the current standard. POP3 is used for most webmail services such as Gmail and Yahoo. Contents [hide] * 1 Overview * 2 History * 3 Extensions * 3.1 STLS * 3.2 SDPS * 4 Comparison with IMAP * 5 Dialog example * 6 Server implementations * 7 Related Requests For Comments (RFCs) * 8 See also * 9 References * 10 Further reading * 11 External links |
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[edit]Overview
POP supports simple download-and-delete requirements for access to remote mailboxes (termed maildrop in the POP RFC 's). Although most POP clients have an option to leave mail on server after


References: [edit]IMAP2 The interim protocol was quickly replaced by the Interactive Mail Access Protocol (IMAP2), defined in RFC 1064 (in 1988) and later updated by RFC 1176 (in 1990) [edit]IMAP4rev1 The current version of IMAP since 1996, IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501 (published in March 2003) which revised the earlier RFC 2060.
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