论文代写：服务器
鉴于这些事实，邮件服务器是由计算机专家设计的，目的是解决上述问题。目前，在Linux环境中运行一个免费邮件服务器有几个选择。常见的服务器是Sendmail、Qmail、Postfix等。Postfix是最常见的MTA服务器之一，最早于1998年初由Wietse Zweitze Venema医生开发。在早期的实践中，邮件服务器通常是由Sendmail程序设置的。然而，随着技术的快速发展，Venema医生在使用Sendmail程序时发现了一些缺点，特别是在安全性和效率方面。为了解决这些问题，Venema博士发起了一项计划，设计一个新的邮件服务器程序，它将更快更安全的取代原来的Sendmail程序，即Postfix。本文的目的是要明确MTA的主流，特别是Postfix，将其与其他MTA服务器进行比较，并解释MTA在Linux网络和其他安全系统中的应用。此外，还将努力解决Postfix是如何设置的，以及可以使用什么协议。
论文代写：服务器
In light of these facts, mail servers have been designed by computer experts, with the aim to solve above problems. Currently, there are several options for running a free mail server in the Linux environment. Common servers are Sendmail, Qmail, Postfix and so on. Postfix, one of the most common MTA servers was firstly developed by Doctor Wietse Zweitze Venema early in 1998. In the early practice, mail server was conventionally set by Sendmail program. However, with the fast advancement of technology, Doctor Venema identified some shortcomings while using the Sendmail program, especially with respect to safety and efficiency. In order to solve these problems, Doctor Venema initiated a plan to design a new mail server program which would be faster and safer to replace the original Sendmail program, namely, Postfix. The purpose of this thesis is to give a clear view of mainstream MTA’s, especially the Postfix, comparing it with other MTA servers and explain the application of MTA’s in Linux network and in other security systems. In addition, efforts will also be made to address how Postfix is set up and what protocols can be used.
