[SOLVED]RoundCube SMTP Error: Authentication failure

I'm using Postfix, Dovecot and Roundcube 1.1.3 and it works when using smtp_port = 25. When I change the port to 587 I get the error ERROR: STARTTLS failed () and SMTP Error: Authentication failure: STARTTLS failed.
My roundcube config file is:

$config['default_host'] = 'tls://%n';

$config['smtp_server'] = 'tls://%n;

$config['smtp_port'] = 587;

$config['smtp_user'] = '%u';

$config['smtp_pass'] = '%p';

$config['smtp_conn_options'] = array(
'ssl' => array(
'verify_peer' => true,
'verify_depth' => 3,
'cafile' => '/usr/local/share/ca-certificates/ispserver.crt',
//'local_cert' => '/etc/ssl/private/pure-ftpd.pem'
),
);
If I use ms outlook I can send and recive email on port 587 but in roundcube i just get Authentication error 220. Can anyone help?

 

Ok... it's probablly a cert issue, because after changing the roundcube config.ini.php
$config['smtp_conn_options'] = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
....
$config['smtp_auth_type'] = 'PLAIN';

I finally get an error in postfix log
SSL_accept error from xx-xxx-xxx-xxx.static.t-2.net[xx.xxx.xxx.xxx]: -1
Aug 25 11:40:02 mail postfix/submission/smtpd[21461]: warning: TLS library problem: error:140760FC:SSL routines: SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:649:

and when running "openssl s_client -connect mail.mydomain.si:587 -starttls smtp" I get:
Verify return code: 20 (unable to get local issuer certificate)

So I thing that I need to get a different cert to fix this.

 

SOLVED the problem. Had to add to config.ini:

$config['default_host'] = 'tls://%n';

$config['imap_conn_options'] = array(
'ssl' => array(
'verify_peer' => false,
'verfify_peer_name' => false,
),
);
$config['smtp_conn_options'] = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
),
);

 

Hi, thank you for this topic. I would like to point to the fact that, even if you are using tls (for STARTTLS) the config array is still for 'ssl'.