The Fortinet FortiMail 400E (model FML-400E-BDL) is a compact, 1‑U rack‑mounted firewall designed for secure email gateway solutions. It features four 10/100/1000Base‑T Gigabit Ethernet interfaces, each using standard RJ‑45 connectors, providing high‑speed connectivity for both inbound and outbound traffic. The device is fully manageable, allowing administrators to configure policies, monitor traffic, and update firmware through Fortinet’s management interface. With its single‑U form factor, it fits easily into enterprise server racks while delivering robust security and efficient performance for medium‑sized deployments.