mail1.imantouch.net has no CNAME records.
Question and response
Question
dig mail1.imantouch.net. NS
Answer
The response has no answer records.
Authority
imantouch.net. 10800 SOA darou.imantouch.net. admin.imantouch.net. 2025041801 21600 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0