ns-r.dns.versio.be has no MX records.
Question and response
Question
dig ns-r.dns.versio.be. MX
Answer
The response has no answer records.
Authority
dns.versio.be. 3600 SOA ns1.cldin.eu. hostmaster.dns.versio.be. 1772332707 3600 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0