smtp2.doc.gov has no TXT records.
Question and response
Question
dig smtp2.doc.gov. TXT
Answer
The response has no answer records.
Authority
doc.gov. 1800 SOA cecelia.ns.cloudflare.com. dns.cloudflare.com. 2398226135 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0