ns1.byethost.org has no MX records.
Question and response
Question
dig ns1.byethost.org. MX
Answer
The response has no answer records.
Authority
byethost.org. 952 SOA ns1.byethost.org. response.ifastnet.com. 2017011301 952 961 3601 952
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0