mx.eddrugs2017.com has no CNAME records.
Question and response
Question
dig mx.eddrugs2017.com. NS
Answer
The response has no answer records.
Authority
eddrugs2017.com. 3425 SOA dns.eddrugs2017.com. hostmaster.eddrugs2017.com. 1540626459 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0