d1.bn.md has no MX records.
Question and response
Question
dig d1.bn.md. MX
Answer
The response has no answer records.
Authority
bn.md. 901 SOA ns.nscluster.eu. hostmaster.nscluster.eu. 2026022100 7200 3600 1209600 901
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0