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Upgrading FortiMail firmware in HA mode

If you are running FortiMail units in HA mode (either active-passive or config-only HA), this recipe shows how to perform a seamless firmware upgrade for all units in the HA cluster, and avoid any undue email traffic interruptions.

Upgrading FortiMail firmware in HA mode

If you are running FortiMail units in HA mode (either active-passive or config-only HA), this recipe shows how to perform a seamless firmware upgrade for all units in the HA cluster, and avoid any undue email traffic interruptions.