appbutton.co.kr.	30 IN SOA NS1.BLUEHOST.COM. root.BLUEHOST.COM. (
				123072119  ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

appbutton.co.kr.	30 IN TXT "v=spf1 ip4:50.87.179.84 a mx include:websitewelcome.com
~all"

appbutton.co.kr.	30 IN A	50.87.179.84

Mail exchangers:
appbutton.co.kr.	30 IN MX 10 appbutton.co.kr.
appbutton.co.kr.	30 IN MX 0 mail.appbutton.co.kr.

Name servers:
appbutton.co.kr.	30 IN NS ns2.bluehost.com.
appbutton.co.kr.	30 IN NS ns1.bluehost.com.