ns3.akzonobel.com has no MX records.
Question and response
Question
dig ns3.akzonobel.com. MX
Answer
The response has no answer records.
Authority
akzonobel.com. 43200 SOA ns1.akzonobel.com. extdns.akzonobel.com. 2019124109 10800 3600 3600000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0