mail1.adp.com has no TXT records.
Question and response
Question
dig mail1.adp.com. TXT
Answer
The response has no answer records.
Authority
adp.com. 60 SOA dc01exdnsgm.net.adp.com. hostmaster.adp.com. 2015071448 10800 3600 2592000 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0