邮件发送客户端SMTP协议的实现

Internet的电子邮件服务系统采用SMTP、POP、IMAP等应用协议。文章以SMTP协议为研究对象,在Visual C 6.0编程环境下应用SMTP协议,通过套接字发送SMTP命令,接收并处理邮件服务器的反馈信息,从而在客户端实现对电子邮件的发送。文章详细讨论了SMTP协议的命令、应答、会话流程、邮件格式化的实现以及在发送SMTP和接收SMTP之间的会话及应答过程。软件采用面向对象,消息驱动及多线程等新技术实现系统中的功能。

Implement of SMTP Protocol on Mail Sending Client Based on WINDOWS Environment

Application protocols of SMTP,POP and IMAP are applied to mail service system on Internet.This paper introduces programs of a Visual C development environment.The software is based on Internet/Intranet/LAN environment and WINDOWS system platform with SMTP Protocol.It sends SMTP command via Socket,receives and processes feedback information of mail Server,then realizes sending of E-mail on Client.The article particularly discusses commands,responses,dialog flow and mail format of SMTP protocol,then also particularly discusses process of dialog and response between sending and receipt SMTP based on SMTP protocol.The software adopts new technologies of oriented object,message drive and multithreading to implement system functions.