Registro DMARC
v=DMARC1; p=none
Verification details:

mail-tester.com; dmarc=none header.from=classcaster.net
mail-tester.com; dkim=pass (2048-bit key; unprotected) header.d=classcaster.net header.i=@classcaster.net header.b=STB8LTJH; dkim-atps=neutral
From Domain: classcaster.net
DKIM Domain: classcaster.net

Registro IPv4
host: classcaster.net
class: IN
ttl: 75195
type: A
ip: 172.232.5.31

Servidores DNS Principal (mname) y Secundario (rname)
host: classcaster.net
class: IN
ttl: 75195
type: SOA
mname: ns1.linode.com
rname: dnagy.cali.org
serial: 2021000034
refresh: 14400
retry: 14400
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: classcaster.net
class: IN
ttl: 75196
type: MX
pri: 10
target: mail.classcaster.net

Información TXT
host: classcaster.net
class: IN
ttl: 75196
type: TXT
txt: google-site-verification=CV2kxCfxjtunwRUeSckGgirYfi8fkWAmkGzvAFQgTfk
entries: Array

Información TXT
host: classcaster.net
class: IN
ttl: 75196
type: TXT
txt: vxZ_ulXasHWnLL8bZ6T3mCVfbwc4g52y2DWHNICoDb0
entries: Array

Información TXT
host: classcaster.net
class: IN
ttl: 75196
type: TXT
txt: MWKfrnTrVlTdgf6lU8l_1Srkfelhq1VKiyvKYSFAtPM
entries: Array

Información TXT
host: classcaster.net
class: IN
ttl: 75196
type: TXT
txt: v=spf1 a mx ip4:172.232.5.31 ip6:2600:3c06::f03c:94ff:fe62:df55 a:classcaster.net -all
entries: Array

Registro IPv6
host: classcaster.net
class: IN
ttl: 75196
type: AAAA
ipv6: 2600:3c06::f03c:94ff:fe62:df55