mx1.itpays.no has no CNAME records.
Question and response
Question
dig mx1.itpays.no. NS
Answer
The response has no answer records.
Authority
itpays.no. 4072 SOA a.ns.itpayscloud.com. hostmaster.itpays.net. 2017032201 86400 900 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0