n.dns.hr has no MX records.
Question and response
Question
dig n.dns.hr. MX
Answer
The response has no answer records.
Authority
dns.hr. 3600 SOA dns1.carnet.hr. hostmaster.dns.hr. 2025040855 10800 3600 2419200 14400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0