mail.limes.net.pl has no MX records.
Question and response
Question
dig mail.limes.net.pl. MX
Answer
The response has no answer records.
Authority
limes.net.pl. 1800 SOA jupiter.limes.com.pl. hostmaster.limes.com.pl. 2025100707 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0