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

Servidores DNS Principal (mname) y Secundario (rname)
host: product-id.com
class: IN
ttl: 20035
type: SOA
mname: ns1.siteground.net
rname: dnsadmin.serv01.siteground138.com
serial: 2020071587
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Información TXT
host: product-id.com
class: IN
ttl: 12835
type: TXT
txt: v=spf1 +a +mx include:product-id.com.spf.auto.dnssmarthost.net  ~all
entries: Array