simson.vn.		30 IN SOA ns1.matbao.vn. admin.matbao.com. (
				2021022401 ; serial
				7200       ; refresh (2 hours)
				1800       ; retry (30 minutes)
				1209600    ; expire (2 weeks)
				3600       ; minimum (1 hour)
				)

simson.vn.		30 IN TXT "v=spf1 include:mailgun.org ~all"

simson.vn.		30 IN A	112.78.2.41

Mail exchangers:
simson.vn.		30 IN MX 5 alt1.aspmx.l.google.com.
simson.vn.		30 IN MX 10 mxb.mailgun.org.
simson.vn.		30 IN MX 5 alt2.aspmx.l.google.com.
simson.vn.		30 IN MX 10 mxa.mailgun.org.
simson.vn.		30 IN MX 5 aspmx3.googlemail.com.
simson.vn.		30 IN MX 5 aspmx.l.google.com.
simson.vn.		30 IN MX 5 aspmx2.googlmail.com.

Name servers:
simson.vn.		30 IN NS ns2.matbao.vn.
simson.vn.		30 IN NS ns-bak.matbao.com.
simson.vn.		30 IN NS ns1.matbao.vn.