How to Modify "Changing password on this server" to corresponding name in Horde

If you would like to see "Changing password on domainName" instead of "Changing password on this
server, this can be done by replacing the following line in the backends.php. The path will diffe
r according to the horde setting.
$backends['poppassd'] = array('name' => 'poppasswd server',

with
$domain = substr($_SERVER['SERVER_NAME'], 8);
$backends['poppassd'] = array(// 'name' => 'poppasswd server','name' => $domain,

In my case it is /etc/psa-horde/passwd/backends.php