Registro DMARC
v=DMARC1; p=reject

Servidores DNS Principal (mname) y Secundario (rname)
host: e-flow.do
class: IN
ttl: 3600
type: SOA
mname: ns1-09.azure-dns.com
rname: sidesys.com
serial: 2018100312
refresh: 3600
retry: 600
expire: 1209600
minimum-ttl: 3600

Información TXT
host: e-flow.do
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.protection.outlook.com -all
entries: Array