mx1.net.md has no MX records.
Question and response
Question
dig mx1.net.md. MX
Answer
The response has no answer records.
Authority
net.md. 3600 SOA sfe01.mdl.net. postmaster.mldnet.com. 2026012913 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0