nav-svarka.ru.		30 IN SOA dns1.risp.ru. support.risp.ru. (
				2015061800 ; serial
				86400      ; refresh (1 day)
				7200       ; retry (2 hours)
				3600000    ; expire (5 weeks 6 days 16 hours)
				86400      ; minimum (1 day)
				)

nav-svarka.ru.		30 IN TXT "v=spf1 +a +mx +ip4:90.189.192.100 ~all"

nav-svarka.ru.		30 IN A	90.189.192.100

Mail exchangers:
nav-svarka.ru.		30 IN MX 0 nav-svarka.ru.

Name servers:
nav-svarka.ru.		30 IN NS dns1.risp.ru.
nav-svarka.ru.		30 IN NS dns2.risp.ru.