ns3.odiso.net has no MX records.
Question and response
Question
dig ns1.odiso.net. MX
Answer
The response has no answer records.
Authority
odiso.net. 3600 SOA ns1.cetsi.fr. postmaster.cetsi.fr. 2025654788 1800 3600 1209600 10800
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0