Fortinet
FortiMail 200D
Fortinet’s FortiMail-200D is a rack-mountable e-mail security appliance that inspects more than 170,000 emails per hour. It features flexible deployment options (transparent, gateway and server) that enable the system to adapt to organizational needs and budget while minimizing infrastructure modifications and service disruptions. Featuring a specialized MTA engine, the FortiMail-200D delivers high peak capacity, intelligent routing, QoS, virtualization, and inbound and outbound SMTP routing for maximum messaging performance. In addition to providing Identity Based Encryption as a standard feature, the system offers an integrated logging and reporting engine that enables visibility into messaging usage and quarantine statistics.
https://www.fortinet.com/products/fortimail/200D.html