studorg.ru.		30 IN SOA berdsk.ens.mail.ru. support.biz.mail.ru. (
				2021091302 ; serial
				10800      ; refresh (3 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

studorg.ru.		30 IN TXT "v=spf1 include:_spf.mail.ru include:send-box.ru +a +mx
~all"

studorg.ru.		30 IN A	91.218.230.146

Mail exchangers:
studorg.ru.		30 IN MX 10 emx.mail.ru.

Name servers:
studorg.ru.		30 IN NS berdsk.ens.mail.ru.
studorg.ru.		30 IN NS seversk.ens.mail.ru.