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

Servidores DNS Principal (mname) y Secundario (rname)
host: clereco.eu
class: IN
ttl: 71562
type: SOA
mname: leonardo.polito.it
rname: root.leonardo.polito.it
serial: 2026020303
refresh: 86400
retry: 3600
expire: 1209600
minimum-ttl: 86400

Información TXT
host: clereco.eu
class: IN
ttl: 71561
type: TXT
txt: v=spf1 -all
entries: Array