mx.allibert-sanitaire.com has no TXT records.
Question and response
Question
dig mx.allibert-sanitaire.com. TXT
Answer
The response has no answer records.
Authority
allibert-sanitaire.com. 3600 SOA dns.allibert-sanitaire.com. hostmaster.allibert-sanitaire.com. 1132909111 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0