Fortinet FortiMail 900F

Fortinet FortiMail 900G

FortiMail 900G is a high-performance, enterprise-grade email security appliance purpose-built for mid-to-large organisations, education institutions, and government departments that require powerful protection and scalability.

Delivering advanced multi-layered defence against spam, phishing, ransomware, zero-day exploits, impersonation, and Business Email Compromise (BEC), the FortiMail 900G combines proven performance with deep integration across the Fortinet ecosystem.

Powered by FortiGuard Labs and integrated into the Fortinet Security Fabric, it enables organisations to prevent, detect, and respond to sophisticated email-based threats with confidence.

Enterprise-Grade Protection Against Email Threats

FortiMail 900G uses advanced, layered detection technologies to stop both known and unknown attacks:

• 99.99% spam catch rate (independently validated)

• 100% malware detection in real-world testing

• Multi-layer anti-spam inspection (IP, domain, SPF, DKIM, DMARC)

• Behavioural analysis and outbreak protection

• Content Disarm & Reconstruction (CDR)

• Cloud sandboxing for advanced threat analysis

• Impersonation and cousin-domain detection

• URL click protection and re-scan on access

• Newsletter (greymail) detection and filtering

This layered approach ensures comprehensive protection across inbound, outbound, and internal email traffic.

Built for Enterprise Performance

FortiMail 900G is designed to handle high mail volumes with consistent performance:

• Up to 1.3 million messages per hour (email routing)

• Up to 900,000 messages per hour with FortiGuard Anti-Spam + Virus Outbreak

• Up to 650,000 messages per hour with Enterprise ATP enabled

• Support for up to 500 protected email domains

• 16 GB memory

• 2 x 4 TB storage (expandable)

• Hardware RAID support (0, 1, 5, 10, Hot Spare)

• Dual hot-swappable power supplies

• 1U rack-mount form factor

• 4 x GE RJ45 + 2 x GE SFP interfaces

It is ideal for organisations that require both high throughput and high resilience.

Flexible Deployment Options

FortiMail 900G supports multiple deployment models:

• Gateway mode (MX redirection)

• Transparent mode (no MX changes required)

• Server mode (full SMTP server functionality)

• API-based integration with Microsoft 365 and Google Workspace

• On-premises, private cloud, or hybrid environments

API-level integration enables:

• Real-time mailbox scanning

• Scheduled scanning

• Post-delivery threat clawback

• Internal mail inspection

This allows organisations to enhance native Microsoft and Google protections without infrastructure disruption.

Integrated Data Loss Prevention & Encryption

Protect sensitive data and meet compliance requirements with built-in:

• Data Loss Prevention (DLP)

• File fingerprinting and sensitive data detection

• Healthcare, finance, and PII identification

• Server-to-server TLS

• S/MIME support

• Identity-Based Encryption (IBE)

• Optional Outlook encryption trigger

These capabilities reduce the risk of accidental or malicious data leakage.

Fabric-Enabled Threat Intelligence & Automation

As part of the Fortinet Security Fabric, FortiMail 900G shares Indicators of Compromise (IoCs) and telemetry with:

• FortiAnalyzer

• FortiSandbox

• FortiSIEM

• FortiSOAR

• FortiNDR

• FortiIsolator

This integration enables cross-vector threat correlation, automated response workflows, and reduced operational burden on security teams.

Intuitive Management & High Availability

FortiMail 900G includes:

• Modern HTML5 management interface

• Real-time dashboards and rich reporting

• Centralised quarantine management

• Role-based administration

• Detailed message tracking

• Active-Passive and Active-Active high availability

• Quarantine and mail queue synchronisation

It provides full visibility and control over email traffic while simplifying ongoing administration.

Why Choose FortiMail 900G?

FortiMail 900G is ideal for organisations that:

• Manage high-volume email environments

• Require enterprise-level spam and malware detection

• Need advanced protection against BEC and targeted attacks

• Operate Microsoft 365 or Google Workspace at scale

• Want deep integration across their Fortinet security stack

If email remains your most targeted attack vector, FortiMail 900G delivers the performance, intelligence, scalability, and resilience required to secure it properly without compromising operational efficiency.