Registro DMARC
v=DMARC1; p=none; rua=mailto:postmaster@mx1.rusender-mail.ru

Registro IPv4
host: u.to
class: IN
ttl: 14400
type: A
ip: 186.2.165.57

Servidores DNS Principal (mname) y Secundario (rname)
host: u.to
class: IN
ttl: 14400
type: SOA
mname: ns2.ucoz.net
rname: dnsadmin.ucoz.net
serial: 2026080501
refresh: 10800
retry: 1800
expire: 2592000
minimum-ttl: 10800

Servidor de Correo
host: u.to
class: IN
ttl: 14400
type: MX
pri: 1
target: mx100.ucozmail.com

Información TXT
host: u.to
class: IN
ttl: 14400
type: TXT
txt: v=spf1 mx a:mx100.ucozmail.com include:rsndr.ru ~all
entries: Array