spf.groupe-convergence.net has no MX records.
Question and response
Question
dig spf.groupe-convergence.net. MX
Answer
The response has no answer records.
Authority
groupe-convergence.net. 3600 SOA dns1.as39305.net. hostmaster.groupe-convergence.net. 34 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0