hosting.k.pl has no MX records.
Question and response
Question
dig hosting.k.pl. MX
Answer
The response has no answer records.
Authority
hosting.k.pl. 3600 SOA ns1.hosting.k.pl. research.korbank.pl. 2023030601 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0