officegrad.ru.		30 IN SOA ns1.ihc.ru. info.ihc.ru. (
				2018011601 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

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

officegrad.ru.		30 IN A	37.143.11.11

Mail exchangers:
officegrad.ru.		30 IN MX 10 mail.officegrad.ru.

Name servers:
officegrad.ru.		30 IN NS ns1.ihc.ru.
officegrad.ru.		30 IN NS ns2.ihc.ru.