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3.33.2	smtp		: SMTP service configuration.

	usage		: java -jar GbtUtility-2.1.76.jar [options] rest smtp <get | set> [args...]
	<get>		: Get smtp information.
	<set> <file>	: Set smtp information by given JSON file as payload.

	Example		:
	by nodelist	: java -jar GbtUtility-2.1.76.jar rest smtp get
	by single host	: java -jar GbtUtility-2.1.76.jar -H 10.1.27.79 rest smtp set smtpconfig.json
	by scan IP	: java -jar GbtUtility-2.1.76.jar -S ssdp rest smtp set smtpconfig.json

	Notice that	: Get option won't show the primary and secondary authentication password.
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