select-a.net.		30 IN SOA select-a.net. postmaster.select-a.net. (
				1537748310 ; serial
				3600       ; refresh (1 hour)
				1800       ; retry (30 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

select-a.net.		30 IN TXT "v=spf1 include:_spf.heteml.jp  ~all"

select-a.net.		30 IN A	157.7.44.183

Mail exchangers:
select-a.net.		30 IN MX 50 mx.hetemail.jp.

Name servers:
select-a.net.		30 IN NS dns02.muumuu-domain.com.
select-a.net.		30 IN NS dns01.muumuu-domain.com.