[Dovecot] Dovecot+Sieve

[Andrey Garkin]

Hi All!!!
I'm configure mail server with Postix+Mysql+Dovecot.
How can I'm using to work sieve plugins?
My dovecot.conf
/protocol lda {
mail_plugin_dir = /usr/lib/dovecot/lda
#sendmail_path = /usr/sbin/postfix
#auth_socket_path = /var/run/dovecot/auth-master
mail_plugins = cmusieve
#global_script_path = /etc/sieve.conf
}
plugin {
sieve = /etc/sieve.conf
sieve = /home/vmail/domain.ru/user at domain.ru/.dovecot.sieve/

My sieve.conf
cat sieve.conf
/require "fileinto";
if header :contains "Subject" "***SPAM***" {
fileinto ".Spam";
stop;
My .dovecot.sieve
require "fileinto";
if header :contains "Subject" "***SPAM***"  {
fileinto ".Spam";
stop;
}/

The mail server is already installed and work, but the sieve plugins is 
not work(((
/ls /usr/lib/dovecot/lda
lib01_acl_plugin.so   
lib11_trash_plugin.so
lib20_expire_plugin.so 
lib20_mail_log_plugin.so  
lib90_cmusieve_plugin.la
lib10_quota_plugin.so 
lib20_convert_plugin.so 
lib20_fts_plugin.so    
lib21_fts_squat_plugin.so 
lib90_cmusieve_plugin.so/


All messages marked as ***SPAM*** ,  get to a folder the .INBOX...
_Sieve plugins is not working._
In what there can be a problem?

Thanks for All!!!
Best Regards Andrey...