$TTL	3600
@	IN SOA	ns.otptest. lsa.otptest. (
		1		; serial
		60		; refresh
		10		; retry
		300		; expiry
		30 )		; minimum

	IN NS		ns.otptest.
	IN MX	10	mx.otptest.

c.1	IN PTR		resolve.otptest.