With Mac OS X Server version 10.5, with the Advanced Configuration, you can use the Server Admin application's Web panel to enable Web-based Spotlight searching for a website. Note that such searches might produce many messages such as the following in Apache's error log:
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
This message does not indicate a configuration issue and it will not prevent the Spotlight search from returning the correct results.
This document will be updated as more information becomes available.