Fortinet FortiMail 400F

Fortinet FortiMail 400F

Powered by FortiGuard Labs and integrated into the Fortinet Security Fabric, the FortiMail 400F helps security teams prevent, detect, and respond to email-based threats with confidence.

Advanced Protection Against Email-Borne Threats

FortiMail 400F uses layered detection technologies to block both known and zero-day threats:

• 99.99% spam catch rate (independently validated)

• Multi-layer anti-spam and anti-malware inspection

• Virus outbreak protection

• Content Disarm & Reconstruction (CDR)

• Sandbox analysis for advanced threat detection

• Impersonation and cousin-domain detection

• SPF, DKIM, and DMARC enforcement

• URL click protection and rewrite scanning

• Behavioural analysis and attachment inspection

Whether threats arrive via malicious links, infected attachments, or social engineering campaigns, FortiMail 400F delivers comprehensive email security coverage.

High Performance for Growing Organisations

Designed for small to midsized enterprises, education environments, and distributed organisations, the FortiMail 400F delivers:

• Up to 250,000 email messages per hour (routing)

• Up to 200,000 messages per hour with FortiGuard Anti-Spam + Virus Outbreak

• Up to 150,000 messages per hour with Enterprise ATP enabled

• Support for up to 70 protected email domains

• 8 GB memory and 2 x 1 TB storage

• 1U rack-mount form factor

• 4 x GE RJ45 interfaces

• Optional dual power supply

This ensures reliable performance even during peak mail flow or attack spikes.

Microsoft 365 & Google Workspace Integration

FortiMail 400F can be deployed in multiple modes, including:

• Gateway mode (MX record redirection)

• Transparent mode

• Server mode

• API-based integration for Microsoft 365 and Google Workspace

API integration enables:

• Real-time mailbox scanning

• Scheduled scanning

• Post-delivery threat clawback

• Internal email inspection

This makes FortiMail 400F a powerful enhancement to native Microsoft and Google email security controls.

Integrated Data Loss Prevention & Encryption

Protect sensitive information and maintain compliance with built-in:

• Data Loss Prevention (DLP)

• File fingerprinting

• PII, healthcare and financial data detection

• TLS encryption

• S/MIME support

• Identity-Based Encryption (IBE)

These features help organisations reduce risk, prevent data leakage, and meet regulatory requirements.

Fabric-Enabled Visibility & Automation

As part of the Fortinet Security Fabric, FortiMail 400F shares Indicators of Compromise (IoCs) across your security ecosystem, including:

• FortiAnalyzer

• FortiSandbox

• FortiSIEM

• FortiSOAR

• FortiNDR

This integration allows security teams to correlate threats across network, endpoint, and email vectors, improving response times and reducing operational overhead.

Simple Management, Full Control

FortiMail 400F includes:

• Modern HTML5 interface

• Real-time dashboards and reporting

• Centralised quarantine management

• Per-domain administration

• Detailed message tracking

• High availability (Active-Passive or Active-Active)

Deployment is flexible, scalable, and easy to manage — whether you operate on-premises, in the cloud, or in hybrid environments.

Why Choose FortiMail 400F?

FortiMail 400F is ideal for organisations that need:

• Enterprise-grade email protection without enterprise complexity

• High-performance spam and malware detection

• Advanced protection against BEC and targeted attacks

• Seamless integration with Microsoft 365 or Google Workspace

• Deep visibility across the Fortinet ecosystem

If email is your most targeted attack vector — and for most organisations it is — FortiMail 400F delivers the performance, intelligence, and control required to secure it properly.