I am working on actionable mail with manager level approval workflow. When any user requests for an access it should go to the manager for approval or rejection, the manager can take the action from the received mail itself. But in my case after taking the appropriate action the necessary mail back to Saviynt is getting generated but after the job runs i.e. Email based approval job (IncomingMailARSJob) the error I am getting is Failure:Remote host terminated the handshake.

I have even configured SMTP - Email server settings.

 I would like to know the meaning of this error and how can I resolve it.

Thank you.