mx6.profils.org has no CNAME records.
Question and response
Question
dig mx6.profils.org. NS
Answer
The response has no answer records.
Authority
profils.org. 3321 SOA ns0069.secondary.cloudflare.com. domainname.talentsoft.com. 2015106331 1200 300 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0