mx3.menara.ma has no CNAME records.
Question and response
Question
dig mx3.menara.ma. NS
Answer
The response has no answer records.
Authority
menara.ma. 900 SOA gm1isp.menara.ma. dnsmaster.menara.ma. 2012048689 10800 1080 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0