Registro DMARC
v=DMARC1; p=reject; pct=100; aspf=r; adkim=r

Registro IPv4
host: expres.cz
class: IN
ttl: 1200
type: A
ip: 185.17.117.33

Servidores DNS Principal (mname) y Secundario (rname)
host: expres.cz
class: IN
ttl: 299
type: SOA
mname: ns.mafra.cz
rname: hostmaster.mafra.cz
serial: 2026071100
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: expres.cz
class: IN
ttl: 1200
type: MX
pri: 10
target: smtp1.mafra.cz

Servidor de Correo
host: expres.cz
class: IN
ttl: 1200
type: MX
pri: 10
target: smtp2.mafra.cz

Servidor de Correo
host: expres.cz
class: IN
ttl: 1200
type: MX
pri: 20
target: smtp3.mafra.cz

Servidor de Correo
host: expres.cz
class: IN
ttl: 1200
type: MX
pri: 20
target: smtp4.mafra.cz

Información TXT
host: expres.cz
class: IN
ttl: 1200
type: TXT
txt: MS=ms72217539
entries: Array

Información TXT
host: expres.cz
class: IN
ttl: 1200
type: TXT
txt: google-site-verification=z3_GY6zBSLeuExW04t4RZmPnFlOJUImEQvZdQoItS4I
entries: Array

Información TXT
host: expres.cz
class: IN
ttl: 1200
type: TXT
txt: v=spf1 ip4:194.79.52.0/24 ip4:194.79.53.0/24 ip4:194.79.54.0/24 ip4:194.79.55.0/24 ip4:85.248.69.0/24 ip4:85.248.70.0/24 ip4:195.146.144.0/24 ip4:185.17.117.0/24 ip4:185.17.118.0/24 ip4:185.17.119.0/24 include:spf.protection.outlook.com include:spf.mailkit.eu -all
entries: Array