mx.bushraproperties.com has no CNAME records.
Question and response
Question
dig mx.bushraproperties.com. NS
Answer
The response has no answer records.
Authority
bushraproperties.com. 3513 SOA dns.bushraproperties.com. hostmaster.bushraproperties.com. 1962379057 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0