7.63.189.45.ufinet.com.mx has no MX records.
Question and response
Question
dig 7.63.189.45.ufinet.com.mx. MX
Answer
The response has no answer records.
Authority
ufinet.com.mx. 10800 SOA ns1.ufinetlatam.net. noclatam.ufinet.com. 2025041106 28800 7200 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0