pns44.rootdns.be has no MX records.
Question and response
Question
dig pns44.rootdns.be. MX
Answer
The response has no answer records.
Authority
rootdns.be. 3600 SOA ns1.openprovider.nl. dns.openprovider.eu. 2022032502 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0