Registro DMARC
v=DMARC1; p=none; rua=mailto:abuse@nej.cz

Servidores DNS Principal (mname) y Secundario (rname)
host: tvtrinec.cz
class: IN
ttl: 3600
type: SOA
mname: ns.tvtrinec.cz
rname: admin.tvtrinec.cz
serial: 2022116028
refresh: 3600
retry: 1800
expire: 1209600
minimum-ttl: 3600

Servidor de Correo
host: tvtrinec.cz
class: IN
ttl: 3600
type: MX
pri: 100
target: mail.tvtrinec.cz

Información TXT
host: tvtrinec.cz
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=cIEEAeUsnf5ptvnQ0UVsCJBOuh_l9vPRsHxnp_ZyhgI
entries: Array

Información TXT
host: tvtrinec.cz
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:81.200.48.0/25 -all
entries: Array