ns.axfone.sk has no MX records.
Question and response
Question
dig ns.axfone.sk. MX
Answer
The response has no answer records.
Authority
axfone.sk. 3600 SOA pns101.cloudns.net. support.axfone.eu. 2022020204 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0