Following the update to Messaging Gateway (SMG) 10.6.3, the command line interface (CLI) mta-control all status and service mta status commands show a new "resubmission" MTA instance. This new MTA instance may not be listed as enabled or running.
This new MTA instance is used exclusively by the SMG Threat Defence integration and is not enabled or started unless Threat Defense has been configured and enabled.
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