cal24.pl.		30 IN SOA ns1.cal.pl. hostmaster.cal24.pl. (
				2023103000 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

cal24.pl.		30 IN TXT "v=spf1 a mx ip4:49.12.122.77 include:spf.cal.pl
ip4:31.186.84.242 ~all"

cal24.pl.		30 IN A	49.12.122.77

Mail exchangers:
cal24.pl.		30 IN MX 10 mail.cal24.pl.

Name servers:
cal24.pl.		30 IN NS ns2.cal.pl.
cal24.pl.		30 IN NS ns1.cal.pl.