Since email has become the most important communicating tool in the world, the network administrator always looks for a stable, powerful, and easy installed email server system. Now AirWay ES-4000 present you a hardware-based Email server Appliance,ES-4000, it provides POP3, SMTP and web mail server function that make the equipment suitable for most users; with 160GB hard disk ES-4000 owns the capacity to handle plenty of users; and advanced managed function to customize each account for better performance. •Embedded with mail system, •Anti-Virus Mail server transfer, •Mail account transfer, •DNS, •Web Mail, •Personal Web Disk, •Customize mail account, •(HA) High Availability