mail1.cdkcrm.com has no TXT records.
Question and response
Question
dig mail1.cdkcrm.com. TXT
Answer
The response has no answer records.
Authority
cdkcrm.com. 300 SOA ns.las.us.cdk.com. named.cdk.com. 2019092904 16384 2048 604800 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0