smart has no TXT records.
Question and response
Question
dig smart. TXT
Answer
The response has no answer records.
Authority
smart. 900 SOA ns0.centralnic.net. hostmaster.centralnic.net. 1773129430 60 1800 6048000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0