spf.dominioabsoluto.net has no MX records.
Question and response
Question
dig spf.dominioabsoluto.net. MX
Answer
The response has no answer records.
Authority
dominioabsoluto.net. 86400 SOA ns3.acens.net. hostmaster.ns3.acens.net. 1772626152 14400 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0