srvmail.akanjo.com has no CNAME records.
Question and response
Question
dig srvmail.akanjo.com. NS
Answer
The response has no answer records.
Authority
akanjo.com. 1431 SOA arely.ns.cloudflare.com. dns.cloudflare.com. 2397032802 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0