Concepts And Flow

FortiMail high availability modes

FortiMail units can be configured to operate in high availability (HA) clusters. FortiMail HA has two modes: active-passive and config-only.

  • Active-passive HA: Two FortiMail units operate as an HA cluster, synchronizing both configuration and data, providing failover protection.
  • Config-only HA: Up to 25 FortiMail units use an identical configuration, but do not synchronize data, and therefore operate as independent FortiMail units.

Fortinet recommends HA to achieve uninterrupted service.

For more information on HA, see “Using high availability (HA)” on page 305.


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About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

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