Registro DMARC
v=DMARC1; p=none; rua=mailto:a123systems.ru@gmail.com

Registro IPv4
host: a123systems.ru
class: IN
ttl: 90
type: A
ip: 78.81.121.122

Servidores DNS Principal (mname) y Secundario (rname)
host: a123systems.ru
class: IN
ttl: 90
type: SOA
mname: a123systems.ru
rname: root.a123systems.ru
serial: 1778346302
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: a123systems.ru
class: IN
ttl: 90
type: MX
pri: 10
target: mail.a123systems.ru

Información TXT
host: a123systems.ru
class: IN
ttl: 90
type: TXT
txt: v=spf1 a mx include:_spf.google.com ~all
entries: Array