I think the problem is that apache is running as nobody and the relay-exp is only accessible from root.
Changing apache to run as root is not possible without rebuild...
... Apache has not been designed to serve pages whil running as root. There are known race conditions that will allow any local user to read any file on the system. If you still desire to serve pages as root then add -DBIG_SECURITY_HOLE to the CFLAGS env variable and then rebuild the server.
Is there a solution?