[imp] imp ignoring smtphost

[Eric S. Johansson]

I'm now hitting another interesting little roadblock.  It appears that imp 
is ignoring the smtphost settings.

in horde.conf  I have
/* 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).
  */
// $conf['mailer']['params'] = array();
// $conf['mailer']['params'] = array('sendmail_path' => '/usr/lib/sendmail');

$conf['mailer']['params'] = array('server' => '10.51.64.44');

/**

$servers['imap'] = array(
     'name' => 'asdf IMAP Server',
     'server' => '10.51.64.44',
     'protocol' => 'imap',
     'port' => 143,
     'folders' => 'mail/',
     'namespace' => '',
     'maildomain' => 'asdf.com',
     'smtphost' => '10.51.64.44',
     'realm' => 'asdf.com',
     'preferred' => ''
);

yet every time I try to send mail, it goes to the local host.  Any 
ideas/pointers?