I´ve installed Multi Domain and Domain Mapping.
First Multi Domain and installed the sunrise.php.
After that I´ve installed Domain Mapping and was ask that the sunrise.php is to old. After that I´ve installed the sunrise.pgp from the Domain Mappingpackage.
BUT now the plugin Multi Domain tells me, taht there is no sunrise.php available!
Please copy the content of sunrise.php into /var/www/vhosts/seniorenmobile.de/httpdocs/wp-content/sunrise.php and uncomment the SUNRISE setting in the /var/www/vhosts/seniorenmobile.de/httpdocs/wp-content/wp-config.php file.