ns6.dnsever.co.uk has no MX records.
Question and response
Question
dig ns6.dnsever.co.uk. MX
Answer
The response has no answer records.
Authority
dnsever.co.uk. 14400 SOA ns3.dnsever.co.uk. admin.dnsever.com. 1742891024 86400 600 1209600 14400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0