mail.ediscom.net has no TXT records.
Question and response
Question
dig mail.ediscom.net. TXT
Answer
The response has no answer records.
Authority
ediscom.net. 28800 SOA ns3.ediscom.de. zonemaster.ediscom.de. 2019040914 28800 7200 604800 28800
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0