93-159-11-110.static.ip.netia.com.pl has no MX records.
Question and response
Question
dig 93-159-11-110.static.ip.netia.com.pl. MX
Answer
The response has no answer records.
Authority
static.ip.netia.com.pl. 86400 SOA ns1.internetia.pl. root.ns1.internetia.pl. 2021062917 10801 3601 1209601 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0