mx0.imaginet.fr has no MX records.
Question and response
Question
dig mx0.imaginet.fr. MX
Answer
The response has no answer records.
Authority
imaginet.fr. 600 SOA ns0.coltfrance.com. hostmaster.coltfrance.com. 2025121700 21600 3600 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0