Registro DMARC
v=DMARC1; p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: johnryderphd.com
class: IN
ttl: 14400
type: SOA
mname: ns1.inmotionhosting.com
rname: systems-notices.inmotionhosting.com
serial: 2025073134
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Servidor de Correo
host: johnryderphd.com
class: IN
ttl: 900
type: MX
pri: 0
target: johnryderphd.com