oo4.biz.		30 IN SOA ns1.kei.pl. admin.kei.pl. (
				2024012600 ; serial
				10800      ; refresh (3 hours)
				1800       ; retry (30 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

oo4.biz.		30 IN TXT "v=spf1 a mx include:spf.tld.pl -all"

oo4.biz.		30 IN A	94.152.13.10

Mail exchangers:
oo4.biz.		30 IN MX 10 oo4.biz.

Name servers:
oo4.biz.		30 IN NS ns2.kei.pl.
oo4.biz.		30 IN NS ns1.kei.pl.