Page not found handling for TYPO3 - redirects to a different page depending on the type of error (FE login required or 404). Originally developed by the ADFC, this is a heavily changed version of this (non-published) extension.
Use this in AdditionalConfiguration.php to configure the extension:
$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['adfc_pagenotfound'] = array(
'_DEFAULT' => array(
'pageNotFound_handling' => 'http://www.tld.dev/index.php?id=257', # insert the SpeakingURL path segment of the error page here
'pageNotAuthorized_Url' => 'http://www.tld.dev/index.php?id=256', # insert the SpeakingURL path segment of the error page here with login-form
),
'otherdomain.tld' => array(
'pageNotFound_handling' => 'http://otherdomain.tld/index.php?id=301', # insert the SpeakingURL path segment of the error page here
'pageNotAuthorized_Url' => 'http://otherdomain.tld/index.php?id=301', # insert the SpeakingURL path segment of the error page here with login-form
),
);