HORDE [error] [imp] sendmail returned error code 65

[Harald G.]

> Hallo,
> i can log in to imap but i can't send an email with 'imp'.
>
> Horde is on 192.168.6.6
> qmail is on 192.168.6.5


> my servers.php
> $servers['_prompt'] = array(
>     'name' => 'Choose a mail server:'
> );
>
> $servers['imap'] = array(
>     'name' => 'IMAP COURIER',
>     'server' => 'webmail.mymail.de',
>     'protocol' => 'imap/notls',
>     'port' => 143,
>     'folders' => 'INBOX.',
>     'namespace' => '',
>     'maildomain' => 'example.com',
>     'smtphost' => 'webmail.mymail.de',
>     'realm' => 'example.com',
>     'preferred' => ''
>
>
> This is the ../horde.log when i send an email with 'imp'.
>
> Jul 22 21:39:59 HORDE [error] [imp] sendmail returned error code 65 [on line
> 859 of "/usr/local/www/data-dist/horde/imp/compose.php"]
>
> (I have also SquirrelMail installed on 192.168.6.5, it runs good)

Ok, i think that i clear my problem.
-I just kill sendmail on 192.168.6.6
- in ../horde/config/horde.php i wrote
/**
 ** Mailer
 **/

// What method should we use for sending mail? Valid options are
// currently 'sendmail' and 'smtp'.
$conf['mailer']['type'] = 'smtp';

// An array holding any parameters that the Mail object will need to
// function correctly. For sendmail, this is mainly the sendmail_path
// option; SMTP requires at least a server and a port (if nonstandard).
// If you want to use SMTP authentication, set the 'auth' parameter
// to 'true' (without quotes).
$conf['mailer']['params'] = array();
// $conf['mailer']['params'] = array('sendmail_path' => '/usr/sbin/sendmail');
$conf['mailer']['params'] = array('host' => 'webmail.mymail.de');

I think, that i'm on the right way.