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: tyson.com.mx
class: IN
ttl: 10800
type: SOA
mname: cdcigm.tyson.com
rname: hostmaster.tyson.com
serial: 12
refresh: 10800
retry: 3600
expire: 2419200
minimum-ttl: 900

Información TXT
host: tyson.com.mx
class: IN
ttl: 10800
type: TXT
txt: v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
entries: Array