Servidores DNS Principal (mname) y Secundario (rname)
host: sgmsk.ru
class: IN
ttl: 3600
type: SOA
mname: ns3-l2.nic.ru
rname: sysadmins.sgmsk.ru
serial: 2012122612
refresh: 3600
retry: 1800
expire: 604800
minimum-ttl: 600

Servidor de Correo
host: sgmsk.ru
class: IN
ttl: 86400
type: MX
pri: 20
target: mx01.gazpromins.ru

Servidor de Correo
host: sgmsk.ru
class: IN
ttl: 86400
type: MX
pri: 20
target: mx02.gazpromins.ru