Registro DMARC
v=DMARC1; p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: trsonline.de
class: IN
ttl: 10216
type: SOA
mname: ns1098.ui-dns.de
rname: hostmaster.1und1.de
serial: 2016041922
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: trsonline.de
class: IN
ttl: 1423
type: MX
pri: 10
target: mx00.ionos.de

Servidor de Correo
host: trsonline.de
class: IN
ttl: 1423
type: MX
pri: 10
target: mx01.ionos.de

Información TXT
host: trsonline.de
class: IN
ttl: 1423
type: TXT
txt: v=spf1 include:_spf-eu.ionos.com ~all
entries: Array