Realurl generates the page URIs from the page title. In a multidomain environment there happen to be some pages with the same title, like "contact" or "imprint". It seems as if realurl cannot discriminate those URLs:
http://www.domain1.com/contact/ http://www.domain2.com/contact/
They always lead to the first URL found in the realurl database table, in the example above "http://www.domain1.com/contact/". Is there a way to avoid this?
This is the reaurl configuration:
$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['realurl']=array(
    '_DEFAULT' => array(
        'init' => array(
            'appendMissingSlash' => 'ifNotFile,redirect',
            'emptyUrlReturnValue' => '/',
        ),
        'pagePath' => array(
            'rootpage_id' => '123',
        ),
        'fileName' => array(
            'defaultToHTMLsuffixOnPrev' => 0,
            'acceptHTMLsuffix' => 1,
            'index' => array(
                'print' => array(
                    'keyValues' => array(
                        'type' => 98,
                    ),
                ),
            ),
        ),
    ),
    'www.domain1.de' => '_DEFAULT',
    'domain1.de' => 'www.domain1.de',
    'www.domain2.de' => '_DEFAULT',
    'www.domain2.de' => array(
        'pagePath' => array(
            'rootpage_id' => '456',
        ),
    ),
    'domain2.de' => 'www.domain2.de',
);
				
                        
This is the correct snytax:
The current realurl configuration can be found with the module "Configuration" -> $GLOBALS['TYPO3_CONF_VARS'. There it can be checked whether the realurl configuration file does what it is supposed to do.