mail01.ch.umantis.com has no TXT records.
Question and response
Question
dig mail01.ch.umantis.com. TXT
Answer
The response has no answer records.
Authority
umantis.com. 3600 SOA ns1.umantis.com. hostmaster.umantis.com. 2026030301 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0