hybrid.axtel.com.mx has no MX records.
Question and response
Question
dig hybrid.axtel.com.mx.cdn.cloudflare.net. MX
Answer
hybrid.axtel.com.mx.cdn.cloudflare.net. 300 CNAME c93646b319604df084f86e69213b98d1.pacloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0