Registro DMARC
v=DMARC1; p=reject

Registro IPv4
host: testserver.com
class: IN
ttl: 90
type: A
ip: 54.237.57.21

Servidores DNS Principal (mname) y Secundario (rname)
host: testserver.com
class: IN
ttl: 3600
type: SOA
mname: ns1.namepros-dns.com
rname: dns.namepros.com
serial: 12286935
refresh: 60
retry: 60
expire: 60
minimum-ttl: 60

Información TXT
host: testserver.com
class: IN
ttl: 90
type: TXT
txt: v=spf1 -all
entries: Array