一个SMTP客户端程序的设计与实现—毕业设计论文.doc

毕业设计(论文) 一个SMTP客户端程序的设计与实现 论文作者姓名： 申请学位专业： 申请学位类别： 指导教师姓名（职称）： 论文提交日期： 一个SMTP客户端程序的设计与实现 摘 要 本论文是在实现了SMTP协议的客户端软件MyEMail开发的基础上完成的，涉及到软件的设计、实现以及测试等方面。通过本设计可以掌握SMTP协议，了解到当前邮件服务的一些不足。论文着重对邮件服务所使用的SMTP协议进行了分析，并根据ESMTP协议的规定添加了身份验证的功能增加了邮件服务的安全性。 MyEMail软件是根据SMTP协议的原理、协议的模型以及工作过程,而设计出一款完整、实用的基于SMTP协议的客户端软件。该软件的实现过程中对协议的工作模式和流程进行分析。从常规的邮件发送过程出发，采用C++语言在VC++6.0的平台下，借助VC++6.0提供的应用程序框架MFC加以实现。该软件实现了SMTP协议，具有向邮件服务器发送身份验证消息以及邮件的功能，使用户能够在本地通过客户端程序向服务器发送邮件信息。 目前，虽然协议规定在正文中可以使用网页信息。但使用该手段发送的邮件正文可能包含有恶意代码，从而出现安全隐患，因此，在本设计中并没有提供相关支持。 关键词：SMTP协议；邮件；C++；客户端 The design and implementation of a SMTP Client Abstract This thesis is completed in the foundation of the SMTP protocol client software MyEMail. It relates to the software design, implementation, testing and so on. Through the design, the SMTP protocol can be mastered and the deficiencies of current mail service can be understood. The thesis focuses on analyzing the SMTP protocol used by the mail service and adds the authentication function which will increase the mail service security according to the provisions of the protocol ESMTP. MyEMail SMTP software is based on the principles of the protocol, the model and working processes of agreement. And it is a practical and SMTP protocol based client software. The software analyzes the working model and processes of protocol. It starts with the conventional mail process and uses the C++ language and MFC framework in VC++ 6.0 platform. The SMTP protocol is implemented in this software. It can send authentication information and e-mail to the mail server. The users can send authentication information and E-mail to the server through local software. At present, although the protocol stipulates that the website information can be used in the text, it means that the mail content can contain malicious code, which has potential safe problems. So, the support is not provided in the design. Key words：Protocol; E-Mail; C++; Client目 录 论文总页数：28页 1引言 1 2 SMTP协议概述 1 2.1 协议简介 1 2.