Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:dmarcreport@sch.gr

Servidores DNS Principal (mname) y Secundario (rname)
host: att.sch.gr
class: IN
ttl: 7200
type: SOA
mname: nic.sch.gr
rname: hostmaster.sch.gr
serial: 44502
refresh: 28800
retry: 7200
expire: 6048000
minimum-ttl: 7200

Servidor de Correo
host: att.sch.gr
class: IN
ttl: 7200
type: MX
pri: 10
target: mx3.sch.gr

Información TXT
host: att.sch.gr
class: IN
ttl: 21600
type: TXT
txt: v=spf1 redirect=sch.gr
entries: Array