NET.BN has no MX records.
Question and response
Question
dig NET.BN. MX
Answer
The response has no answer records.
Authority
net.bn. 900 SOA ns.bnnic.bn.NET.BN. postmaster.bnnic.bn. 2014364058 21600 1800 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0