mail.bracnetconnect.net has no CNAME records.
Question and response
Question
dig mail.bracnetconnect.net. NS
Answer
The response has no answer records.
Authority
bracnetconnect.net. 10800 SOA dns1.bdmail.net. root.dns1.bdmail.net. 2024093001 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0