I have used this tool <dns test tool name> to check DNS Servers Test and i got the below message
The name server failed to answer queries sent over TCP. This is probably due to the name server not correctly set up or due to misconfgured filtering in a firewall. It is a rather common misconception that DNS does not need TCP unless they provide zone transfers - perhaps the name server administrator is not aware that TCP usually is a requirement. ================
Do you i need to fix this? how to do?
[edited by: aakk9999 at 12:03 pm (utc) on Aug 28, 2013] [edit reason] Examplified tool name [/edit]
there is nothing you can do about this. this is all under the control of your name server provider. the name server will continue working, using UDP instead of TCP, as long as no DNS responses exceed 512 bytes.