Servidor de Correo
host: inv.rba.es
class: IN
ttl: 300
type: MX
pri: 10
target: noreply.qemailserver.com

Información TXT
host: inv.rba.es
class: IN
ttl: 300
type: TXT
txt: v=spf1 include:_spf.qualtrics.com ~all
entries: Array