The Fortinet FortiMail 400E is a compact 1U firewall appliance engineered for secure email gateway solutions. Equipped with four 1000Base‑T Gigabit Ethernet RJ‑45 interfaces, it delivers high‑speed connectivity for both inbound and outbound mail traffic. The device supports centralized management, enabling administrators to configure policies, monitor performance, and enforce security controls from a single console. Ideal for midsize deployments, the FortiMail 400E combines robust protection against spam, phishing, and malware with a streamlined hardware footprint suitable for rack‑mounted environments. Its 1U form factor ensures minimal rack space consumption while maintaining full‑featured security capabilities.