mx1.netim.net has no CNAME records.
Question and response
Question
dig mx1.netim.net. NS
Answer
The response has no answer records.
Authority
netim.net. 1382 SOA ns.netim.net. tech.netim.com. 2026021603 3600 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0