dns1.p.lodz.pl has no MX records.
Question and response
Question
dig dns1.p.lodz.pl. MX
Answer
The response has no answer records.
Authority
p.lodz.pl. 3600 SOA dns1.p.lodz.pl. domain.p.lodz.pl. 2026030300 10800 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0