Roundcube can't send an email any more

[karstengit]

I am using the combination dovecot and exim with TLS encryption.
Roundcube can connect to the imap and show all the mails with

$config['default_host'] = 'mydomain.com';
$config['default_port'] = 143;
$config['imap_auth_type'] = 'PLAIN';

but i can't send any email!
I tried out every combination but it does not work!
I always get an error like: SMTP Fehler (-1): Die Verbindung ist fehlgeschlagen.
or another error.
Sometimes i get an error in the log of Exim like
TLS error on connection from localhost [::1] (gnutls_handshake): A TLS fatal alert has been received.

My last setting is:
$config['smtp_server'] = 'tls://%d';
$config['smtp_port'] = 587;
$config['smtp_user'] = '%u';
$config['smtp_pass'] = '%p';
$config['smtp_auth_type'] = 'PLAIN';

Then i get no error, but the page keeps standing forever in "sending" ...

Older versions of roundcube in 2014 did work before.

[alecpl]

That's probably not Roundcube issue. Maybe you have to use smtp_conn_options. What PHP version?

[karstengit]

Debian uses PHP Version 7.0.19-1
My first try was to install roundcube with the debian package, but it failed with the mariadb database.
I think all dependent packages should be installed.

[alecpl]

Is there any error in Roundcube error log? Did you try disabling cert/host validation via smtp_conn_options?

[karstengit]

O.K. I found the error log. Last entry:
`[25-Sep-2017 17:45:59 Europe/Berlin] ERROR: Failed to connect socket: Die Operation ist jetzt in Bearbeitung ()

[25-Sep-2017 17:45:59 +0200]: SMTP Error: Connection failed: Failed to connect socket: Die Operation ist jetzt in Bearbeitung in /---l/program/lib/Roundcube/rcube.php on line 1665 (POST /cubemail/?_task=mail&_unlock=loading1506354318923&_lang=de&_framed=1&_action=send)`

How smtp_conn_options should be used?
I already tried it with the example in the config file
$config['smtp_conn_options'] = array(
'ssl' => array(
'verify_peer' => true,
'verify_depth' => 3,
'cafile' => '/etc/openssl/certs/exim.cert.pem',
),
);
but with no success.

[alecpl]

I think "failed to connect socket" has nothing to do with TLS. Still does not look like Roundcube issue.

[karstengit]

Why other PHP software can mail without any problem?

Just this mail program can't.

[alecpl]

Are you sure %d resolves to the valid hostname?

[karstengit]

No - i am not sure about anything.
Because i don't understand this mass of parameters needed.
It seems localhost is able to send mails in a standard way in programs like forum, wiki, etc.

[alecpl]

Then don't use variables, but set proper hostname and make sure it resolves to proper IP address.

[karstengit]

Trying the old version 0.9.5. now.
After login a blank screen.
Trying with PHP 5.3 causes "session not guilty" in every case.

Roundcube seems not to be usable with Debian 9.0 any more. :-(

[karstengit]

The IP is not really clear.
The webmailer should be used either from Intranet with 192.168.1.x and via Dynamic IP from outside.
I tried both: Setting localhost, and DynDNS Name.
Nothing works!

[alecpl]

It does not matter from where do you connect to Roundcube. It matters where Roundcube is installed.

[karstengit]

The server has an Intranet IP.
Trying actual roundcube with PHP 5.3 causes a blank screen.
I altered it back to the standard PHP 7.0 and trying to send an email causes again

[26-Sep-2017 16:33:53 Europe/Berlin] ERROR: Die Operation ist jetzt in Bearbeitung (115)
[26-Sep-2017 16:33:53 Europe/Berlin] ERROR: Failed to connect socket: Die Operation ist jetzt in Bearbeitung ()
[26-Sep-2017 16:33:53 +0200]: SMTP Error: Connection failed: Failed to connect socket: Die Operation ist jetzt in Bearbeitung in /.../program/lib/Roundcube/rcube.php on line 1665 (POST /.../?_task=mail&_unlock=loading1506436390747&_lang=de&_framed=1&_action=send)

There is no chance to understand what is going wrong?
I have no idea how to test the connection.

This is very ugly because reading via IMAP works perfect.
Only SMTP fails.
But when i send an email for instance with joomla in PHP 7 on the same server it works without any problem !?
There can't be a problem with PHP or Exim - the problem is in the code / configuration of roundcube.

[karstengit]

As i have written it runs before the server upgrade in the old roundcube with the following configuration:

$rcmail_config['smtp_server'] = '';
$rcmail_config['smtp_port'] = 25;
$rcmail_config['smtp_user'] = '';
$rcmail_config['smtp_pass'] = '';
$rcmail_config['smtp_auth_type'] = '';
$rcmail_config['smtp_auth_cid'] = null;
$rcmail_config['smtp_auth_pw'] = null;
$rcmail_config['smtp_helo_host'] = '';
$rcmail_config['smtp_timeout'] = 0;

Simple and without no complication.
Of course i tried every combination of not encrypted SMTP access in the current version too.
Then there was always an error in the frontend like
SMTP Fehler (250): Die Authentisierung ist fehlgeschlagen.
with the log
[26-Sep-2017 17:00:20 Europe/Berlin] ERROR: SMTP server does not support authentication ()
[26-Sep-2017 17:00:20 +0200]: SMTP Error: Authentication failure: SMTP server does not support authentication (Code: ) in /.../program/lib/Roundcube/rcube.php on line 1665 (POST /.../?_task=mail&_unlock=loading1506438019928&_lang=de&_framed=1&_action=send)

My conclusion is now that roundcube can't be used anymore. :-(