ns5000.twinservers.net has no MX records.
Question and response
Question
dig ns5000.twinservers.net. MX
Answer
The response has no answer records.
Authority
twinservers.net. 86400 SOA ns4000.twinservers.net. techs.hostiq.ua. 2026022600 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0