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

Servidores DNS Principal (mname) y Secundario (rname)
host: sbcglobal.net
class: IN
ttl: 14400
type: SOA
mname: ns0.attdns.com
rname: eiss-dns.att.com
serial: 2026110201
refresh: 3600
retry: 1800
expire: 2592000
minimum-ttl: 300

Servidor de Correo
host: sbcglobal.net
class: IN
ttl: 738
type: MX
pri: 10
target: mx-att.mail.am0.yahoodns.net

Información TXT
host: sbcglobal.net
class: IN
ttl: 12926
type: TXT
txt: v=spf1 include:_ipspf.yahoo.com ~all
entries: