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

Servidores DNS Principal (mname) y Secundario (rname)
host: ecastleart.com
class: IN
ttl: 19533
type: SOA
mname: ns1.siteground.net
rname: root.serv01.us2.siteground.us
serial: 2020112023
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Información TXT
host: ecastleart.com
class: IN
ttl: 19533
type: TXT
txt: v=spf1 +a +mx +ip4:34.174.52.114 include:ecastleart.com.spf.auto.dnssmarthost.net ~all
entries: Array