Registro DMARC
v=DMARC1; p=none;

Servidores DNS Principal (mname) y Secundario (rname)
host: digitalmathlibrary.net
class: IN
ttl: 21600
type: SOA
mname: ns1.a2hosting.com
rname: root.mi3-cl9-its4.a2hosting.com
serial: 2025032006
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: digitalmathlibrary.net
class: IN
ttl: 14400
type: MX
pri: 0
target: mail.digitalmathlibrary.net

Información TXT
host: digitalmathlibrary.net
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +ip4:66.198.240.38 include:spf.a2hosting.com ~all
entries: Array