Qingyuan Secure Email System

Qingyuan secure email system adopts embedded technology, integrates software and hardware, is secure, stable, easy to operate, and easy to install and maintain. The system is divided into several parts: backend management, system level management, domain level management, and user applications. The system meets the requirements of separating the three members of the classified information system, including independent system administrators, security and confidentiality administrators, and security auditors, and the three members cannot be derived from each other. According to the requirements of the classified level, the trust domain, users, emails, and attachments in the email system are managed by classified security levels, with high security classified level control mechanisms, operation audit mechanisms, password authentication mechanisms, high-strength email transmission storage encryption technology, and complete operation log information management functions. It solves the problem of high confidentiality transmission and operation behavior audit in the transmission process of classified emails in the government intranet, complies with the national confidentiality standard "Security Technical Requirements for Application Systems Involving State Secrets (Interim)", and meets the classification protection standards and security requirements proposed by the national confidentiality department. Measures, Can ensure the data transmission security, interconnectivity, and system stability requirements between emails within the network.

The secure email system has the following characteristics and advantages:

（1） Integrated software and hardware, safe and stable, plug and play

The Qingyuan secure email system integrates optimized and recompiled dedicated Linux operating systems, web services, secure email systems, databases, real-time antivirus functions, etc. into professional hardware devices, truly achieving software and hardware integration; Anti virus infection, anti malicious attacks, safe and stable; Easy to operate, plug and play, just connect the network line and power supply to directly configure and apply the system, without the complicated configuration operations of Linux operating system and application system;

Adopting system and data isolation technology ensures high data security. Even if the operating system is damaged, simply plug and replace the hardware containing the secure email system, restart the machine, and it will not affect the data;

（2）webInterface management and application

Qingyuan Email System is a software and hardware integrated email server, where system platform settings, system level settings, domain level settings, user settings, and applications are all completed through a web browser, Very convenient for users to use, it can avoid complex command operations on the Linux system.

（3） Visual monitoring of system performance

The system can graphically display the actual operation of the system server, facilitating hardware upgrades. Including system hardware, operating system, runtime, CPU load, memory usage, server hard disk usage, and network statistics.

（4） The system supports dual machine hot standby mode to ensure system security and stability

Advanced system fault tolerance technology, the system can run on a single machine and support RAID function. It also supports the use of dual machine hot backup or cluster implementation. When using dual machine hot backup, it can ensure that from network layer failures, system hardware failures, to any service problems, the system can smoothly start another machine to take over the problematic system, ensuring the stability and security of system operation.

（5） A comprehensive system security backup and recovery strategy

It can be set up through a highly secure SSH tool on a remote server to automatically connect to backups, and system administrators can view the system load situation and flexibly set scheduled automatic backup times based on the system's built-in graphical performance monitoring table; It can also be manually backed up to the hosting host and local host; When there is a problem with the email system, backup data can be used for timely recovery and management work.