Registro IPv4
host: 678.ru
class: IN
ttl: 600
type: A
ip: 158.160.68.243

Servidores DNS Principal (mname) y Secundario (rname)
host: 678.ru
class: IN
ttl: 3600
type: SOA
mname: ns1.yandexcloud.net
rname: mx.cloud.yandex.net
serial: 1
refresh: 10800
retry: 900
expire: 604800
minimum-ttl: 86400

Servidor de Correo
host: 678.ru
class: IN
ttl: 600
type: MX
pri: 10
target: mail.678.ru