[horde] horde 2.2.4 and postfix problem

[Andreas Kotowicz]

Hi,

I try to convince horde to use postfix as my MTA. so I've made the
following settings in horde.php

$conf['mailer']['type'] = 'sendmail';
 
$conf['mailer']['params'] = array('sendmail_path' =>
'/opt/postfix/libexec/postfix/smtp');

but whenever I try to send out an email I get in my maillogs this line:

postfix/smtp[30867]: fatal: invalid option: ?

I just don't know what postfix wants to tell. maybe someone on the list
knows what I can do about this.

thanks,
andreas