WARNING. The parent servers (ns5.nic.uk.) are not providing glue for all your nameservers. This means that they are supplying the NS records (host.example.com), but not supplying the A records (192.0.2.53), which can cause slightly slower connections, and may cause some incompatibilities with some programs (if the programs are not fully RFC-compliant). This behavior is allowed by the RFCs. This will usually occur if your DNS servers are not in the same TLD as your domain (for example, a DNS server of "ns1.example.co.uk" for the domain "example.com"). In this case, you can speed up the connections slightly by having NS records that are in the same TLD as your domain. I do not understand the last sentence. Can someone explain to me what does it mean? My client domain is .co.uk while my dns server is .com . I believe that's why. How do i go about rectify this problem?