mx2.naseeb.com has no CNAME records.
Question and response
Question
dig mx2.naseeb.com. NS
Answer
The response has no answer records.
Authority
naseeb.com. 1741 SOA greg.ns.cloudflare.com. dns.cloudflare.com. 2396172102 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0