В web сервере cherokee 301й редирект можно настроить на вкладке Host Match, изменив метод на Wildcards. Добавляем шаблон *.example.com и при обращении, например, на www.example.com перейдет редирект на example.com.



Быстро проверить можно здесь:

www.seoconsultants.com/tools/headers

#1 Server Response: /archives/1628
HTTP Status Code: HTTP/1.1 301 Moved Permanently
Connection: Keep-Alive
Keep-Alive: timeout=30
Transfer-Encoding: chunked
Date: Wed, 08 Dec 2010 18:53:40 GMT
Server: Cherokee/1.0.12 (UNIX)
Location: /archives/1628
X-Powered-By: PHP/5.3.3
X-Pingback: /xmlrpc.php
Content-Type: text/html; charset=UTF-8
Redirect Target: /archives/1628

#2 Server Response: /archives/1628
HTTP Status Code: HTTP/1.1 200 OK
Connection: Keep-Alive
Keep-Alive: timeout=30
Transfer-Encoding: chunked
Date: Wed, 08 Dec 2010 18:53:41 GMT
Server: Cherokee/1.0.12 (UNIX)
X-Powered-By: PHP/5.3.3
X-Pingback: /xmlrpc.php
Content-Type: text/html; charset=UTF-8
Link:; rel=shortlink

Если видим строку в 1м ответе сервера:

HTTP/1.1 301 Moved Permanently

Значит все ok.