mx-0.cyberadmin.cyberfolks.pl has no MX records.
Question and response
Question
dig mx-0.cyberadmin.cyberfolks.pl. MX
Answer
The response has no answer records.
Authority
cyberadmin.cyberfolks.pl. 300 SOA ns1.cyberfolks.pl. hostmaster.cyberadmin.cyberfolks.pl. 2025123019 300 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0