Registro DMARC
v=DMARC1; p=reject;

Servidores DNS Principal (mname) y Secundario (rname)
host: bizsellbuy.biz
class: IN
ttl: 21600
type: SOA
mname: ns1.costar.com
rname: hostmaster.ns1.costar.com
serial: 2022110101
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 86400

Información TXT
host: bizsellbuy.biz
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array

Información TXT
host: bizsellbuy.biz
class: IN
ttl: 3600
type: TXT
txt: v=DMARC1; p=reject;
entries: Array