post office protocol

TCP/IP is synonymous with a set of protocols, and it also includes many protocols that make up the TCP/IP protocol cluster.TCP/IP protocol cluster is divided into four layers, IP is located in the second layer of the Protocol cluster (corresponding

Common TCP ports include the following: The telnet protocol is a member of the TCP/IP protocol family and is the standard protocol and main method of the Internet remote login service. It provides users with the ability to complete remote host work

  Content on this page IntroductionCommunication with POP3 serversDownload emailDownload an email to a specified folderDownload mail header informationDelete email 　 　 Introduction POP stands for Post Office Protocol, which is the Post Office

RFC document directory Rfc1 host softwareRfc2 host softwareRfc3 documentation SpecificationRfc4 Network ScheduleRfc6 and Bob Kahn sessionsRfc10 documentation SpecificationRfc13 zero text length EOF InformationRfc16 M. I .tRf18imp-IMP and host-Host

Email is used to send and communicate confidence on the Internet. It is one of the most important Internet services. According to statistics, 30% of Internet businesses are email-related. At the same time, we cannot deny that it plays a very

A POP3 and SMTP command from Baidu Library   POP3 commands What is POP3?POP3 (Post Office Protocol 3) is the 3rd version of the Post Office Protocol. It specifies how to connect a personal computer to an Internet Mail Server and download an email

POP3 Post Office Protocol-Version 3 1. Introduction For small nodes on the network, it is impractical to support the message transmission system (MTS. For example, a workstation may not have sufficient resources to allow the SMTP server and a

SMTP Protocol Introduction     1. IntroductionSMTP is called Simple Mail transmission protocol (Simple Mail Transfer Protocal). It aims to provide efficient and reliable mail Transmission for users.. An important feature of SMTP is

Computers communicate with each other through ports. For example, when accessing a website, Windows opens a port (such as port 1025) on the local machine and connects to a port of the remote website server, this is also true when others access you.

** Application Layer ** data BitTorrent: a popular P2P protocol. DNS: domain name system, an Internet core service that maps domain names to IP addresses. DHCP: Dynamic Host Configuration Protocol, LAN protocol, mainly used: (1) automatically assign

Preface: In the past few days, the company's email server has always encountered some problems. As there were not many contacts, and the email server had to be maintained by myself, I think it is necessary to learn the relevant knowledge! Two

View the complete version: [-- Port details and how to enable and disable ports --] I went to trustnet-platinum Network Management-Internet-Software Development-> Windows-> port explanation and how to enable port

Basic network knowledge (I) VPS: (Virtual Private Server) Virtual Private Server that virtualizes one Server into multiple servers. Container technology and virtualization technology. Each VPS can be assigned an independent public IP address and

1. RFC 822 email format RFC 822 defines the format used for email messages. RFC 822 defines the content submitted and transmitted by SMTP, POP3, IMAP, and other Email transmission protocols. An email defined in RFC 822 consists of an envelope and

Port 21: port 21 is mainly used for FTP (file transfer protocol) services. Port 23: port 23 is mainly used for telnet (Remote logon) services. It is a common logon and simulation service on the Internet.Program. Port 25: port 25 is open to

POP3 protocol analysisChapter 4. POP3 Overview POP3 is called Post Office Protocol version3, that is, Post Office Protocol version 3rd. It is used by the user agent to obtain the mail on the mail server. POP3 uses the C/S communication model, and

Summary of common knowledge points in PHP PHP Aspects:The difference between 1,echo print Print_rECHO is a PHP statement,Print and Print_r is a function , the statement does not return a value, the function can have a return value .Print prints

1. the TCP (Transmission Control Protocol)/IP (Internet Protocol) protocol family is a network communication model and an entire network transmission protocol family. It is the basic communication architecture of the Internet. TCP/IP layer-4

The text below is all from the Internet.   OSI is layer-7 and TCP is layer-4. As follows: OSI: from Wikipedia http://zh.wikipedia.org/wiki/OSI%E6%A8%A1%E5%9E%8B.  Application Layer) The application layer can communicate with the application

Here we will detail the principles of the Internet email system. First, let's start with the basic concepts and concepts: What is the program that provides Internet postal services? What technical terms and terminologies are there? Here, we will