[sork] Using VirusWall and imap

[desant1@tin.it]

Hi everyone
I'm configuring horde309 and imp404 on a redhat Enterprise 
ES4

The email that arrive on port 25 are filtered in this way
Postfix 
is configured with the "sandwich configuration" as shown in the next 
schema:
Postfix (port 25) -> Trend Micro VirusWall (Port 10025) -> 
Postfix (port 2006)

i've configured imp to use imap (dovecot server) 
with the following parameter:
$servers['imap'] = array(
    'name' => 
'IMAP Server',
    'server' => 'localhost',
    'hordeauth' => false,
    'protocol' => 'imap/notls',
    'port' => 143,
    'folders' => 
'mail/',
    'namespace' => '',
    'maildomain' => 'my_domain',
    
'smtphost' => 'localhost',
    'smtpport' => 25,
    'preferred' => '',
    'dotfiles' => false,
    'hierarchies' => array()
);

email sent 
with imp and containing virus are succesfully delivered to the 
destination user but the virus are not intercepted.
Virus are 
intercepted if the email are sent from an email client (from localhost 
or from remote).

Can somebody help me?