cro.pl.			30 IN SOA ns1.cro.pl. hostmaster.cro.pl. (
				2017082801 ; serial
				7200       ; refresh (2 hours)
				540        ; retry (9 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

cro.pl.			30 IN TXT "v=spf1 mx a ~all"

cro.pl.			30 IN A	188.165.203.207

Mail exchangers:
cro.pl.			30 IN MX 10 mail.cro.pl.

Name servers:
cro.pl.			30 IN NS ns1.cro.pl.
cro.pl.			30 IN NS ns2.cro.pl.