Registro DMARC
v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; fo=0; rua=mailto:postmaster@mail.ccb.cz; ruf=mailto:postmaster@mail.ccb.cz; rf=afrf; pct=100; ri=86400

Registro IPv4
host: linuxexpres.cz
class: IN
ttl: 3600
type: A
ip: 89.185.227.237

Servidores DNS Principal (mname) y Secundario (rname)
host: linuxexpres.cz
class: IN
ttl: 3600
type: SOA
mname: ns1.ignum.com
rname: hostmaster.ignum.cz
serial: 2022040702
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: linuxexpres.cz
class: IN
ttl: 3600
type: MX
pri: 10
target: mail.ccb.cz

Servidor de Correo
host: linuxexpres.cz
class: IN
ttl: 3600
type: MX
pri: 20
target: mail2.ccb.cz

Información TXT
host: linuxexpres.cz
class: IN
ttl: 3600
type: TXT
txt: v=spf1 mx a ip4:89.185.227.237/32 ip4:212.24.129.230/32 ip4:83.167.250.168/32 ip4:78.80.61.124/32 ip4:89.185.237.201/32 ip4:109.80.216.225/32 ~all
entries: Array

Registro IPv6
host: linuxexpres.cz
class: IN
ttl: 3600
type: AAAA
ipv6: 2a01:430:100:47::5