mail01.omdc.pl has no TXT records.
Question and response
Question
dig mail01.omdc.pl. TXT
Answer
The response has no answer records.
Authority
omdc.pl. 86400 SOA ns5.omdc.pl. admin.omdc.pl. 2011042270 10800 5400 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0