skill.jp.		30 IN SOA ns1.xserver.jp. root.xserver.jp. (
				0          ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

skill.jp.		30 IN TXT "v=spf1 +a:sv13012.xserver.jp +a:skill.jp +mx
include:spf.sender.xserver.jp ~all"

skill.jp.		30 IN A	162.43.116.13

Mail exchangers:
skill.jp.		30 IN MX 0 skill.jp.

Name servers:
skill.jp.		30 IN NS ns3.xserver.jp.
skill.jp.		30 IN NS ns4.xserver.jp.
skill.jp.		30 IN NS ns2.xserver.jp.
skill.jp.		30 IN NS ns5.xserver.jp.
skill.jp.		30 IN NS ns1.xserver.jp.