Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r;

Servidores DNS Principal (mname) y Secundario (rname)
host: commercialistaostia.com
class: IN
ttl: 86400
type: SOA
mname: ns1.siteground.net
rname: root.it26.siteground.eu
serial: 2020040387
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Información TXT
host: commercialistaostia.com
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +a:it26.siteground.eu  include:commercialistaostia.com.spf.auto.dnssmarthost.net ~all
entries: Array