netflat.co.kr.		30 IN SOA ns.mailplug.com. root.mailplug.com. (
				2020073003 ; serial
				21600      ; refresh (6 hours)
				1800       ; retry (30 minutes)
				1209600    ; expire (2 weeks)
				7200       ; minimum (2 hours)
				)

netflat.co.kr.		30 IN TXT "v=spf1 mx include:mailplug.com ~all"

netflat.co.kr.		30 IN A	14.49.36.141

Mail exchangers:
netflat.co.kr.		30 IN MX 10 mx01.mailplug.com.
netflat.co.kr.		30 IN MX 20 mx02.mailplug.com.

Name servers:
netflat.co.kr.		30 IN NS ns2.mailplug.com.
netflat.co.kr.		30 IN NS ns.mailplug.com.