smtp.redham.ru has no TXT records.
Question and response
Question
dig smtp.redham.ru. TXT
Answer
The response has no answer records.
Authority
redham.ru. 3600 SOA ns1.redham.ru. support.redham.ru. 2022071664 900 600 86400 3600
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0