ns3.mynet.pl has no MX records.
Question and response
Question
dig ns3.mynet.pl. MX
Answer
The response has no answer records.
Authority
mynet.pl. 3600 SOA ns1.ogicom.pl. admin.ogicom.pl. 2025120409 10800 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0