rndc: invalid command from xx.xx.xx.xx#1284: expired

[Kevin Darcy]

Michael Barrett wrote:

>Does anyone know what a message like the above means?  I can't find it
>anywhere on google.  The localhost can do an rndc just fine to itself,
>it's just when a remote host (who was able to do this before) tries
>that it gives this error in the messages log.  The rndc client returns
>the following error:
>
>rndc: connection to remote host closed
>This may indicate that the remote server is using an older version of
>the command protocol, this host is not authorized to connect, or the
>key is invalid.
>
>The version on both hosts is 9.2.3, and the key has not changed.  Any
>help you can give would be great.  Thanks.
>
Is time synchronized between the two machines?

                                                                         
            - Kevin