Web-Cyradm, kann nicht einloggen (Cyrus, IMAP Server Web Admin)

$DEFAULTLANG = "en_EN";  

# The Cyrus login stuff
$CYRUS = array(
        'HOST'  => 'localhost',  
        'PORT'  => '143',  
        'ADMIN' => 'cyrus',  
        'PASS'  => 'secret'  
);

$DB = array(
        'TYPE'  => 'mysql',  
        'USER'  => 'mail',  
        'PASS'  => 'secret',  
        'PROTO' => 'tcp',       // set to "tcp" for TCP/IP  
        'HOST'  => 'localhost',  
        'NAME'  => 'mail'  
);

$DB['DSN'] = sprintf('%s://%s:%s@%s+%s/%s',     $DB['TYPE'], $DB['USER'],  
                                                $DB['PASS'], $DB['PROTO'],  
                                                $DB['HOST'], $DB['NAME']);  

# Where should web-cyradm write its log to?
$LOG_DIR = "/var/log/web-cyradm/";  

$SESS_TIMEOUT = 1000;
$DEFAULT_QUOTA = 20000;
$CRYPT = "crypt";  
$DOMAIN_AS_PREFIX = 1;
$PASSWORD_CHANGE_METHOD = "sql";  
error_reporting(E_ERROR);

$VERSION="0.5.4";  

# Define reserved Emailadresses (Separated by comma):
$RESERVED="postmaster,root";