www.internetia.net.pl has no MX records.
Question and response
Question
dig www.internetia.net.pl. MX
Answer
The response has no answer records.
Authority
internetia.net.pl. 1800 SOA chacha.inetia.pl. hostmaster.inetia.pl. 2025071256 28800 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0