Registro DMARC
v=DMARC1; p=none;

Registro IPv4
host: a2u.es
class: IN
ttl: 90
type: A
ip: 82.223.71.116

Servidores DNS Principal (mname) y Secundario (rname)
host: a2u.es
class: IN
ttl: 14871
type: SOA
mname: ns1114.ui-dns.biz
rname: hostmaster.1and1.com
serial: 2017053147
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: a2u.es
class: IN
ttl: 3600
type: MX
pri: 10
target: mx00.ionos.es

Servidor de Correo
host: a2u.es
class: IN
ttl: 3600
type: MX
pri: 10
target: mx01.ionos.es

Información TXT
host: a2u.es
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.mailjet.com include:_spf-eu.ionos.com ~all
entries: Array