mail.itoolabs.com has no TXT records.
Question and response
Question
dig mail.itoolabs.com. TXT
Answer
The response has no answer records.
Authority
itoolabs.com. 60000 SOA ns.itoolabs.com. hostmaster.itoolabs.com. 2025120737 28800 7200 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0