_spf.notaria14pachuca.mx has no MX records.
Question and response
Question
dig _spf.notaria14pachuca.mx. MX
Answer
The response has no answer records.
Authority
notaria14pachuca.mx. 3600 SOA ns1.net.mexline.com. jzeron.mexline.com. 1770003671 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0