net.rozhled.net has no MX records.
Question and response
Question
dig net.rozhled.net. MX
Answer
The response has no answer records.
Authority
net.rozhled.net. 600 SOA ns.rozhled.cz. admin.rozhled.cz. 2022011426 3600 900 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0