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: bakerssupermarkets.com
class: IN
ttl: 555
type: SOA
mname: cdcbcextdmzma.kroger.com
rname: abuse.kroger.com
serial: 744660316
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 300