post.th.com has no TXT records.
Question and response
Question
dig post.th.com. TXT
Answer
The response has no answer records.
Authority
th.com. 900 SOA ns1.ksc.net. hostmaster.ns.ksc.co.th. 2021022740 10800 3600 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0