ess.de.barracuda.com has no TXT records.
Question and response
Question
dig ess.de.barracuda.com. TXT
Answer
The response has no answer records.
Authority
ess.de.barracuda.com. 900 SOA ns-2001.awsdns-58.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0