Registro DMARC
v=DMARC1; p=none; sp=none; aspf=r; adkim=r

Registro IPv4
host: readnotify.com
class: IN
ttl: 300
type: A
ip: 91.103.1.84

Servidores DNS Principal (mname) y Secundario (rname)
host: readnotify.com
class: IN
ttl: 300
type: SOA
mname: smtp.mesvr.com
rname: postmaster.readnotify.com
serial: 2026102800
refresh: 7100
retry: 7200
expire: 1209600
minimum-ttl: 128000

Servidor de Correo
host: readnotify.com
class: IN
ttl: 300
type: MX
pri: 5
target: smtp.mesvr.com

Información TXT
host: readnotify.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx ptr ip4:91.103.1.84 ip4:91.103.1.83 ip4:91.103.4.75 ip6:2a02:2078:1:2:cd00::3 ip4:91.103.1.85 ?all
entries: Array