mx1.uadns.com has no TXT records.
Question and response
Question
dig mx1.uadns.com. TXT
Answer
The response has no answer records.
Authority
uadns.com. 600 SOA ns1.uadns.com. hostmaster.drs.net.ua. 2025032801 28800 7200 3600000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0