pdns1.rootvps.pl has no MX records.
Question and response
Question
dig pdns1.rootvps.pl. MX
Answer
The response has no answer records.
Authority
rootvps.pl. 3600 SOA pdns1.rootvps.pl. admin.hitme.pl. 2019102401 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0