sut5.co.uk has no MX records.
Question and response
Question
dig sut5.co.uk. MX
Answer
The response has no answer records.
Authority
sut5.co.uk. 7200 SOA ns-canada.topdns.com. hostmaster.topdns.com. 2025022004 14400 7200 950400 7200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0