301 ?

I checked my site using http://www.seocentro.com It came up with a warning and im
not sure what this means can anyone help and explain it to me.this is what it came up with below website name removed

Redirect: Url redirect to ‘http://***********.co.uk/’ with a ‘301 Move
Moved Permanently’ respond code and because of that this url does not get indexed by the search engines. If you planned for a redirect, you did a good thing to do it with a ‘301 Moved Permanently’ redirect, in that case the search engines knows that the redirected url is the new url.

? thanks.