[imp] imp can't work with courier-imap

[dsgx network]

hi there .. i had horde+imp.... for about 1 year .. never had problems with 
imap/notls .. i was using cyrus-imap before and was working great .. now im 
exchanging to courier-imap .. and i can't make it to work im putting
on servers.php on path horde/imp/config ..
$servers['cyrus31'] = array(
     'name' => 'test.com',
     'server' => 'my-ip',
     'protocol' => 'imap/notls',
     'port' => 143,
     'folders' => 'INBOX.',
     'namespace' => 'INBOX.',
     'maildomain' => 'test.com',
     'realm' => 'test.com',
     'preferred' => ''
);
when i put this he gives me this error on the courier-imap
Mar 28 09:48:13 utils imapd: Connection, ip=[::ffff:myip]
Mar 28 09:48:13 utils imapd: LOGIN: DEBUG: ip=[::ffff:myip], command=
Mar 28 09:48:13 utils imapd: LOGIN: DEBUG: ip=[::ffff:myip], command=.
Mar 28 09:48:13 utils imapd: DISCONNECTED, ip=[::ffff:myip], headers=0,
body=0
---
when i change the port from 143 to 993 gives me the error
Mar 28 10:00:33 utils imapd-ssl: Connection, ip=[::ffff:myip]
Mar 28 10:00:43 utils imapd-ssl: LOGIN FAILED, ip=[::ffff:myip]
--
and when i leave .. port 143 with imap/ssl/novalidate-cert
gives me the error
Mar 28 10:06:18 utils imapd: Connection, ip=[::ffff:myip]
Mar 28 10:06:18 utils imapd: LOGIN: DEBUG: ip=[::ffff:myip], command=AUT
HENTICATE
Mar 28 10:06:23 utils imapd: LOGIN FAILED, ip=[::ffff:myip]
Mar 28 10:06:23 utils imapd: LOGIN: DEBUG: ip=[::ffff:myip], command=AUT
HENTICATE
---
thx for ur time and help would be appreciate