realsystem.ru.		30 IN SOA ns2.isnet.ru. hostmaster.mesto.biz. (
				1724066944 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

realsystem.ru.		30 IN TXT ""v=spf1 ip4:82.151.192.171 a mx
~all""
realsystem.ru.		30 IN TXT "v=spf1 +mx ~all"

realsystem.ru.		30 IN A	82.151.192.171

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

Name servers:
realsystem.ru.		30 IN NS ns2.isnet.ru.
realsystem.ru.		30 IN NS ns.isnet.ru.