mx.cousinpaysagiste.com has no MX records.
Question and response
Question
dig mx.cousinpaysagiste.com. MX
Answer
The response has no answer records.
Authority
cousinpaysagiste.com. 3600 SOA dns.cousinpaysagiste.com. hostmaster.cousinpaysagiste.com. 1320437632 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0