Registro DMARC
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Servidores DNS Principal (mname) y Secundario (rname)
host: tesco.net
class: IN
ttl: 10800
type: SOA
mname: pdns194.ultradns.com
rname: web\.admin.uk.tesco.com
serial: 2015032599
refresh: 86400
retry: 7200
expire: 2592000
minimum-ttl: 3600

Servidor de Correo
host: tesco.net
class: IN
ttl: 831
type: MX
pri: 10
target: mxb-00511c01.gslb.pphosted.com

Servidor de Correo
host: tesco.net
class: IN
ttl: 831
type: MX
pri: 10
target: mxa-00511c01.gslb.pphosted.com

Información TXT
host: tesco.net
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf-00511c01.pphosted.com -all
entries: Array