邮件服务系统中带smtp非系统用户认证的实现

本文介绍了利用POSTFIX、CYRUS_SAAL、CYRUS_IMAP和MYSQL的组合建立一个基于Linux平台的邮件服务器，该技术很好的解决了邮件系统中用户认证的问题，并具有很高的实用性。     

基于Linux的局域网邮件服务器设计与实现

在详细分析客户端和邮件服务器交互过程的基础上,使用SMTP、ESMTP、POP3协议,利用守护进程、多线程、Makefile文件和Shell脚本等技术,在Linux环境下局域网内建立了一个健全稳定、运行高效、使用方便、易于管理的邮件服务器系统。该系统包含两个服务器:发件服务器和收件服务器。发件服务器完成邮件的发送功能,其重点在于群发和转发邮件;收件服务器完成邮件的接收功能。     

基于多路复用的群集邮件系统的研究与实践

在分析目前高校邮件系统面临问题及传统解决方案存在不足的基础上,讨论了实现横向可伸缩性,可用于连接到多个邮件服务器的单一域名,以使整个邮件服务器阵列作为一个单一主机呈现给邮件用户的多路复用器技术,并给出了中国农业大学基于此技术的群集邮件系统的应用实践.     

Web电子邮件系统的设计与实现

本文介绍了电子邮件系统的体系结构和工作原理,分析了JavaMail邮件技术的体系架构。在JSP和JavaMail技术的基础上设计了一个Windows平台上的基于Web的电子邮件系统,通过SMTP协议和IMAP协议实现了与特定邮件服务器的连接。     

基于邮件发送仿真的反垃圾邮件产品测试平台

测试平台的运行框架包括:攻击系统、评测系统以及检测系统。攻击系统由邮件样本服务器(MailSampleDatabase)和邮件发送服务器(Sender)组成,邮件样本服务器负责提供并更新邮件发送服务器的样本资源。评测系统包括邮件接收服务器(MailServer)以及监测管理系统(Monitor),监测管理系统目前在邮件接收服务器上运行,可以实时监测测试过程并提供评测结果。检测系统则将待测反垃圾邮件产品配置入内组成邮件过滤服务器(Filter)。     

邮件服务器中基于地址的一种电子邮件过滤方法

互联网是一个无政府世界，有些人利用电子邮件肆意散发邮件广告，导致很多人的邮箱垃圾成堆；有些人利用电子邮件制造邮件炸弹，要么使电子邮件服务器瘫痪，要么使别人无法正常使用电子信箱；还有更坏的人利用电子邮箱传播电脑病毒．本文针对UNIX系统中的邮件服务器，阐述了通过使用Sendmail配置邮件中继域文件relay-domains和Ac-cess文件防止邮件攻击的技术．     

为Foxmail提速

使用Foxmail收发邮件,有时Foxmail在解析域名时耗时较多.其实,只要我们在"账户"\"属性"中,将"邮件服务器"选项卡的"发送邮件服务器"和"接收邮件服务器"直接设置为服务器的IP地址,即可省去Foxmail的域名解析环节,从而加快邮件的收发速度.     

使用EMOS搭建Extmail邮件服务器

使用EMOS搭建Extmail邮件服务器是目前搭建Extmail服务器最方便的方法。首先,安装EMOS操作系统,安装完成之后,需要用户对邮件服务器进行简单地设置,例如,邮件服务器的域名,数据库类型等。设置完毕后,邮件服务器就能正常工作。但是,为了更加贴近用户自身的要求,用户需要对邮件服务器软件进行版本升级以及个性化的设置。     

诈骗邮件出“钓鱼”新招

寒假及春节期间教育网整体运行平稳,未发生重大安全事件。携手钓鱼网站更具欺骗性近期伪造邮件服务器管理员发送诈骗邮件骗取用户的账号信息的攻击事件增多。值得关注的是,与以往要求用户通过邮件回复账号和密码的欺诈方式不同,最新的欺骗邮件会给出邮件服务器的链接,并通过钓鱼网站伪造邮件的登录页面来欺骗用户输入账号密码。这种攻击由于结合了钓     

诈骗邮件出“钓鱼”新招

寒假及春节期间教育网整体运行平稳,未发生重大安全事件. 携手钓鱼网站更具欺骗性 近期伪造邮件服务器管理员发送诈骗邮件骗取用户的账号信息的攻击事件增多.值得关注的是,与以往要求用户通过邮件回复账号和密码的欺诈方式不同,最新的欺骗邮件会给出邮件服务器的链接,并通过钓鱼网站伪造邮件的登录页面来欺骗用户输入账号密码.这种攻击由于结合了钓鱼网站,比传统的直接要求回复邮件的方式更具欺骗性.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.