mailsystem.dnscpanel.com has no CNAME records.
Question and response
Question
dig mailsystem.dnscpanel.com. NS
Answer
The response has no answer records.
Authority
dnscpanel.com. 3457 SOA dns1.host-redirect.com. hostmaster.dnscpanel.com. 2026013001 3600 600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0