_spf.onestudio.mx has no MX records.
Question and response
Question
dig _spf.onestudio.mx. MX
Answer
The response has no answer records.
Authority
onestudio.mx. 3600 SOA ns2.onestudio.mx. elizabeth.murorojo.com. 2026010801 3600 3600 172800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0