mail.cheapsender.email has no CNAME records.
Question and response
Question
dig mail.cheapsender.email. NS
Answer
The response has no answer records.
Authority
cheapsender.email. 300 SOA ns1.timeweb.ru. dns.timeweb.ru. 2024111507 28800 7200 259200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0