Postfix System Overview

There are many http://www.aliyun.com/zixun/aggregation/11243.html ">" help documents on the Web that describe how to create a mail server, Different people have different choices for MTAs. Some people like to use qmail some people like to use Postfix and Exim. For a long time I like to use qmail as my MTA, which is an excellent software. But the qmail need a license, There is no convenient compiled executable code that users can easily use on the platform they are accustomed to using. Although installing qmail is not so difficult, users need to apply a variety of patches and tricks to complete the installation. Due to the above reasons, and once it is installed, the operation is satisfactory. So QMail has become a favorite of many computer geeks. The disadvantage of qmail is that it is difficult to upgrade because each time you need to compile the source code and install. To sum up, decide to use Postfix: a fast and secure MTA like QMail, and easy to install and configure basic System on any Linux version. Postfix has many additional features and supports Maildir mailbox format, and PostgreSQL background MySQL is easy to store and manage virtual domains. Here you will install a complete virus and spam virtual mail domain system for ISPs, virtual host providers, and individual companies that want to use Ubuntu Linux as a service platform.

Before starting the installation, you must understand how our system works. A virtual messaging system must be able to control many domains with many users and users using different interfaces. When you control multiple domains in the same messaging system, the virtual mail system raises some management issues. We have to answer these questions with our technology. For example, you have the following questions to answer.

What if two users use the same username in different domains?
If you provide IMAP access and SMTP authentication, how do you combine different authentication programs in the same system?
How do you guarantee the security of the components that make up your system?
What should we do if a user asks to use his spam filtering strategy?
Administrators for each domain require the use of web-based interfaces to manage their mail domains.
How to build a web-based management system for postfix.
Each user is required to change the mail account password based on the Web interface.
How to back up the user account database and disaster recovery.
Use SSL to realize transport Layer security.
Control the mailing list for any one domain.
How do you handle all the questions raised above? Don't worry, I'll answer these questions one by one. Go on reading happily.

What do you get with this system?

web-based System Management
There is no limit to the number of domains
Virtual Mail users independent of the operating system user
Specific domain user name
Mailbox Capacity Allocation
Accessing mail accounts via the web
change user password based on Web interface
Support IMAP,POP3
Automatic reply
SMTP Authentication Secure Relay
SSL guarantees Transport Layer Security
Brute force spam filtering
Anti-Virus filtering
Log analysis