mail.c1communication.com has no TXT records.
Question and response
Question
dig mail.c1communication.com. TXT
Answer
The response has no answer records.
Authority
mail.c1communication.com. 86400 SOA ns1.dan.com. dns.jomax.net. 2025100100 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0