sumsoft.co.kr.		30 IN SOA sumsoft.co.kr. postmaster.sumsoft.co.kr. (
				20050112   ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				3600000    ; expire (5 weeks 6 days 16 hours)
				43200      ; minimum (12 hours)
				)

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

sumsoft.co.kr.		30 IN A	112.175.50.184

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

Name servers:
sumsoft.co.kr.		30 IN NS ns.sumsoft.co.kr.
sumsoft.co.kr.		30 IN NS ns2.sumsoft.co.kr.