active-dns.com has no MX records.
Question and response
Question
dig active-dns.com. MX
Answer
The response has no answer records.
Authority
active-dns.com. 3600 SOA ns1.cloudns.net. support.cloudns.net. 2015090123 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0