ytg.kr.			30 IN SOA ns1.hosting.co.kr. admin.ytg.kr. (
				27         ; serial
				21600      ; refresh (6 hours)
				1800       ; retry (30 minutes)
				1209600    ; expire (2 weeks)
				180        ; minimum (3 minutes)
				)

ytg.kr.			30 IN TXT "v=spf1 include:mailgun.org ~all"

ytg.kr.			30 IN A	132.145.93.254

Mail exchangers:
ytg.kr.			30 IN MX 10 mxb.mailgun.org.
ytg.kr.			30 IN MX 10 mxa.mailgun.org.

Name servers:
ytg.kr.			30 IN NS ns1.hosting.co.kr.
ytg.kr.			30 IN NS ns3.hosting.co.kr.
ytg.kr.			30 IN NS ns4.hosting.co.kr.
ytg.kr.			30 IN NS ns2.hosting.co.kr.