Last updated March 2020
force_fsync — ensure that data is synced to disk on reception
Force_Fsync = false
Force_Fsync = true
Upon receiving a message, but before a 250 response is sent to the client confirming receipt of that message, Momentum must write the message to the spool. If the system does not invoke the
fsync call, it cannot guarantee that the message has been completely journalled to permanent storage.
If this option is set to true,
fdatasync if available) will be called prior to returning a confirmation to the SMTP client. If it is false, the system will not.
Mail systems concerned about losing messages during a system crash should set this option to
The default is
force_fsync is valid in the global scope.
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