Start of Authority
mname: dns.business-host.ru
rname: root.business-host.ru
serial: 2016012713
refresh: 10800 retry: 3600
expire: 604800 minimum: 86400
serial: 2016012713
refresh: 10800 retry: 3600
expire: 604800 minimum: 86400
Mail Exchangers
ptr.olvit.biz(10)