smtp-out.bearstech.com has no CNAME records.
Question and response
Question
dig smtp-out.bearstech.com. NS
Answer
The response has no answer records.
Authority
bearstech.com. 140 SOA ns1.bearstech.net. admin.bearstech.com. 2026022301 1800 1800 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0