基于Linux系统下的邮件服务器

沈阳航空航天大学北方科技学院毕业设计(论文)摘要电子邮件服务由专门的服务器提供。主要的电子邮件服务器主要有基于Postfix/Sendmail的邮件系统，也是在企业中使用数量最多的邮件系统。其性能可以达到非常高，而且安全性很好，同时软件是开源免费的。本套系统采用B/S模式开发，由服务器端和客户端两部分构成。服务器端除了提供最基本的收发邮件功能之外，它还具有注册新用户、管理用户、群发邮件等功能。客户端分为普通用户端和管理员端。普通用户端可实现基本的注册、收发邮件，修改个人资料等功能，管理员端主要实现群发邮件功能，以方便主管领导发送紧急通知，除此之外，它还可以实现浏览用户信息以及删除用户等操作。论文从需求分析、系统设计、详细设计、系统调试与测试等方面对系统的设计过程进行了详细的描述，并对系统待完善之处提出了建议。关键词：Linux系统；邮件服务；域名解析；服务器沈阳航空航天大学北方科技学院毕业设计(论文)IAbstractE-mailserviceprovidedbyadedicatedserver,butthesystemoflargemailserviceprovidersaregenerallydevelopedortoothertechnologydevelopmentandimplementationoftwotimes.Thee-mailserverisamailsystembasedonPostfix/Sendmail.Usethelargestnumberofmailsysteminenterprise.mailsystembasedonPostfix/Sendmailisinneedofastrongtechnicalforcetorealize,butperformancecanreachveryhigh,butverygoodsecurity,andisopensourceandfreesoftware.ThissystemdevelopedbasedonBrowser/Servermodule,whichcontainsserverandclient.Thissystemisconstitutedwithserverandwebmail.Theserverprovidesthebasicfunctionthatusercanuseittosendandreceivemail.Besides,italsoprovidesotherfunctionssuchas:registeringanewaccount.managingusers’information.sendingsystemmessage.receiveandsendamail,reformperson’sbasicmessage.Theadministratorcansendmanymailsonetimetosendvitalnotice.Inaddition,theadministratoralsocanviewtheusers’messageanddeleteauser’saccount.Thepapersmakeadetaileddescriptionontheprocessofsystemdesignfromtheaspectofneedsanylasis,systemdesign,detaileddesign,systemdebuggingandtesting.Fortheplaceswhichneedtobeperfect,Itofferedasuggection.KeyWords：Linux；Sendmail；Bind；Server沈阳航空航天大学北方科技学院毕业设计(论文)II目录摘要....................................................................................................................................IAbstract..................................................................................................................................I1绪论...................................................................................................................................11.1课题背景.....................................................................................................................11.2课题目的.....................................................................................................................11.3课题意义.....................................................................................................................21.4国内外发展现状及趋势.............................................................................................21.5课题要求.....................................................................................................................32可行性分析.......................................................................................................................42.1经济可行性分析.........................................................................................................42.2技术可行性分析.........................................................................................................42.3操作可行性分析.........................................................................................................52.4法律可行性................................................................................................................63需求分析...........................................................................................................................73.1功能需求.....................................................................................................................73.2环境需求.....................................................................................................................73.3性能需求.....................................................................................................................84系统设计.........................................................................................................................104.1方案论证...................................................................................................................104.1.1系统结构选择....................................................................................................104.1.2邮件系统功能组件............................................................................................104.2工作流程...................................................................................................................114.3功能模块设计...........................................................................................................114.4关键技术及相关原理...............................................................................................134.5重点难点...................................................................................................................145详细设计.........................................................................................................................155.1框架结构...................................................................................................................15沈阳航空航天大学北方科技学院毕业设计(论文)III5.2DNS服务的搭建过程.................................................................................