smtp-ispadmin.airwaynet.cz has no MX records.
Question and response
Question
dig smtp-ispadmin.airwaynet.cz. MX
Answer
The response has no answer records.
Authority
airwaynet.cz. 3600 SOA ns1.awnet.cz. root.awnet.cz. 2025120601 3600 21600 1814400 3600
Additional
The response has no additional records.