51uc.com.		30 IN SOA ns1.sina.com.cn. zhihao.staff.sina.com.cn. (
				20050313   ; serial
				3600       ; refresh (1 hour)
				900        ; retry (15 minutes)
				604800     ; expire (1 week)
				600        ; minimum (10 minutes)
				)

51uc.com.		30 IN TXT "v=spf1 include:spf-uc.sinamail.sina.com.cn ~all"

Mail exchangers:
51uc.com.		30 IN MX 10 freemx1.sinamail.sina.com.cn.

Name servers:
51uc.com.		30 IN NS ns3.sina.com.cn.
51uc.com.		30 IN NS ns4.sina.com.
51uc.com.		30 IN NS ns1.sina.com.cn.
51uc.com.		30 IN NS ns3.sina.com.
51uc.com.		30 IN NS ns2.sina.com.cn.