pkudl.cn.		30 IN SOA win-nikbjc4qtrv. cacti. (
				698        ; serial
				900        ; refresh (15 minutes)
				600        ; retry (10 minutes)
				86400      ; expire (1 day)
				600        ; minimum (10 minutes)
				)

pkudl.cn.		30 IN A	61.49.45.46

Mail exchangers:
pkudl.cn.		30 IN MX 10 mail.pkudl.cn.

Name servers:
pkudl.cn.		30 IN NS dns.pkudl.cn.