Registro DMARC
v=DMARC1; p=none

Servidores DNS Principal (mname) y Secundario (rname)
host: mundomason.com
class: IN
ttl: 7200
type: SOA
mname: ns1.eunicom.eu
rname: dns.eunicom.eu
serial: 1775088000
refresh: 14400
retry: 3600
expire: 1209600
minimum-ttl: 1800