smtp.stampinet.net has no TXT records.
Question and response
Question
dig smtp.stampinet.net. TXT
Answer
The response has no answer records.
Authority
stampinet.net. 3600 SOA ns.forpsi.net. admin.forpsi.com. 2026030201 14400 3600 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0