simple-directory.net.	30 IN SOA ns1.cal.pl. root.simple-directory.net. (
				2023103000 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

simple-directory.net.	30 IN TXT "v=spf1 a mx ip4:49.12.122.77 include:spf.cal.pl
~all"

simple-directory.net.	30 IN A	49.12.122.77

Mail exchangers:
simple-directory.net.	30 IN MX 10 mail.simple-directory.net.

Name servers:
simple-directory.net.	30 IN NS ns2.cal.pl.
simple-directory.net.	30 IN NS ns1.cal.pl.