mail.walshnet.co.uk has no MX records.
Question and response
Question
dig mail.walshnet.co.uk. MX
Answer
The response has no answer records.
Authority
walshnet.co.uk. 3600 SOA ns.mainnameserver.com. hostmaster.mainnameserver.com. 2026021545 10800 600 2419200 3600
Additional
The response has no additional records.