I have an issue with one server rejecting our emails but I think I should have an additional MX record.
Using MX toolbox. When I search cmp.org.uk I get
10 remote.cmp.org.uk 184.108.40.206 60 min Blacklist Check SMTP Test
When I search remote.cmp.org.uk I get no record exists.
My question is should I have records setup for remote.cmp.org.uk and is so what records do I need.