The message below comes up from an Website analyzer.
Do I need to do anything about it?
If so what should I do?
Be sure that www.thespecifier.com
and thespecifier.com are not running in parallel.
Redirecting requests from a non-preferred hostname is important because search engines consider URLs with and without "www" as two different websites.
Once your preferred domain is set, use a 301 redirect for all traffic to your non-preferred domain.