mx22.kabsi.at has no CNAME records.
Question and response
Question
dig mx22.kabsi.at. NS
Answer
The response has no answer records.
Authority
kabsi.at. 1845 SOA signal.kabsi.at. hostmaster.kabsi.at. 28203524 36000 7200 3600000 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0