Problem starts when Linux box loses or MBP is outside home LAN

Hello experts,

I am attempting to install CCC on my friend's MBP to follow the behavior of Time Machine and it runs totally.

I've put it to backing every hour, to my Linux box and also disabled the CCC update dialogues, as well as disabled Growl notices, and put it to 'e-mail me' after every time it finishes.

Then everything is working very well.

The problem starts when the Linux box loses or MBP is outside our home LAN. An error message is shown saying that the server could not be found.

I think, it is produced by OS X because of the style of this dialogue.

I need to disable this. Is there any way? I guess that OS X is showing this in reply to CCC identifying the API to join to the server.

Please help me to solve it.

Thanks a lot.