mx.nano.pl has no TXT records.
Question and response
Question
dig mx.nano.pl. TXT
Answer
The response has no answer records.
Authority
nano.pl. 600 SOA dns1.nano.pl. admin\@active24.pl. 2024020902 10800 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0