oskol.ru.		30 IN SOA ns1.oskolnet.ru. postmaster.oskolnet.ru. (
				2018051001 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
				)

oskol.ru.		30 IN TXT "v=spf1 mx a ~all"

oskol.ru.		30 IN A	45.130.41.40

Mail exchangers:
oskol.ru.		30 IN MX 10 mail.oskolnet.ru.

Name servers:
oskol.ru.		30 IN NS ns2.oskolnet.ru.
oskol.ru.		30 IN NS ns1.oskolnet.ru.