Registro DMARC
v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com;

Registro IPv4
host: postitroma.it
class: IN
ttl: 90
type: A
ip: 18.223.129.156

Registro IPv4
host: postitroma.it
class: IN
ttl: 90
type: A
ip: 52.14.204.57

Servidores DNS Principal (mname) y Secundario (rname)
host: postitroma.it
class: IN
ttl: 1800
type: SOA
mname: a.ns.3m.com
rname: dns.cloudflare.com
serial: 2405901742
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Información TXT
host: postitroma.it
class: IN
ttl: 86400
type: TXT
txt: v=spf1 -all
entries: Array