Servidores DNS Principal (mname) y Secundario (rname)
host: mktsender.net
class: IN
ttl: 86400
type: SOA
mname: ns1.locaweb.com.br
rname: hostmaster.locaweb.com.br
serial: 2022031001
refresh: 3600
retry: 600
expire: 1209600
minimum-ttl: 3600

Información TXT
host: mktsender.net
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:_spf.locaweb.com.br ?all
entries: Array