Registro DMARC
v=DMARC1;p=reject;aspf=s;adkim=s

Servidores DNS Principal (mname) y Secundario (rname)
host: xn--eisant-gva.net
class: IN
ttl: 3600
type: SOA
mname: ldnsse1p.e-i.net
rname: nsmaster.e-i.com
serial: 2026040700
refresh: 28800
retry: 3600
expire: 1209600
minimum-ttl: 3600

Información TXT
host: xn--eisant-gva.net
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:145.226.1.0/24 ip4:145.226.30.0/24 ip4:145.226.65.0/24 ip4:145.226.158.0/24 -all
entries: Array