mx6.bahnhof.se has no CNAME records.
Question and response
Question
dig mx6.bahnhof.se. NS
Answer
The response has no answer records.
Authority
bahnhof.se. 3600 SOA ns.bahnhof.se. hostmaster.bahnhof.se. 2026022400 1800 600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0