mail-kousin.com.	30 IN SOA master.dns.ne.jp. tech.sakura.ad.jp. (
				2014092210 ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				3600000    ; expire (5 weeks 6 days 16 hours)
				3600       ; minimum (1 hour)
				)

mail-kousin.com.	30 IN TXT "v=spf1 a:www2446.sakura.ne.jp mx ~all"

mail-kousin.com.	30 IN A	210.224.185.56

Mail exchangers:
mail-kousin.com.	30 IN MX 10 mail-kousin.com.

Name servers:
mail-kousin.com.	30 IN NS ns2.dns.ne.jp.
mail-kousin.com.	30 IN NS ns1.dns.ne.jp.