Registro DMARC
v=spf1 a:dns.excelsolutionsinc.com ~all

Servidores DNS Principal (mname) y Secundario (rname)
host: excelsolutionsinc.com
class: IN
ttl: 3600
type: SOA
mname: dns.excelsolutionsinc.com
rname: hostmaster.excelsolutionsinc.com
serial: 1957635752
refresh: 43200
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: excelsolutionsinc.com
class: IN
ttl: 3600
type: MX
pri: 0
target: mx.excelsolutionsinc.com

Información TXT
host: excelsolutionsinc.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 a:dns.excelsolutionsinc.com ~all
entries: Array