[ingo] script activation problem

[John-Patrick Obermeier]

hi,

i've a problem to activate my script. following error has occurred:

{87}script errors: line 4: address '': parse error, unexpected $, 
expecting ATOM or '\"'


my backend.conf:

$backends['timsieved'] = array(
     'driver' => 'timsieved',
     'preferred' => '',
     'script' => 'sieve',
     'hordeauth' => 'user',
     'params' => array('hostspec' => 'localhost',
                       'port' => 2000));

is there anybody who can help me???

thx

J.-P. Obermeier