The Apache Error Message Site Application allows you to make custom error pages that your visitors can see if an error occurs while they are viewing your site.
Installing Apache Error Message
For installation instructions, please click here.
Using Apache Error Message
Apache Error Message redirects users to a new page or prints out text when someone accessing the site receives the error. The Apache error message program allows you to customize what you see when you get the error. You can either create a page (many people call it something like "missing.html") and then redirect to that page or put your custom message in. When you installed each Apache Error Message, it gave you the option of a page or text.
Here is the list of errors you could potentially have, the most common ones are in bold:
400 - Bad Request
401 - Unauthorized
402 - Payment Required
403 - Forbidden
404 - Not Found
405 - Method Not Allowed
406 - Not Acceptable
407 - Proxy Authentication Required
408 - Request Timeout
409 - Conflict
410 - Gone
411 - Length Required
412 - Precondition Failed
413 - Request Entity Too Large
414 - Request-URI Too Long
415 - Unsupported Media Type
416 - Requested Range Not Satisfiable
417 - Expectation Failed
500 - Internal Server Error
501 - Not Implemented
502 - Bad Gateway
503 - Service Unavailable
505 - HTTP Version Not Supported