Applicable to:
- Plesk for Linux
Symptoms
-
Unable to send email on Plesk server using webmail interface (Horde or RoundCube), the following error appears:
PLESK_ERROR: Could not open secure TLS connection to the server
-
The following errors are found in
/var/log/psa-horde/psa-horde.log:PLESK_INFO: DEBUG: HORDE Load config file (conf.php; app: horde) [pid 51301 on line 109 of "/usr/share/psa-pear/pear/php/Horde/Registry/Loadconfig.php"]
DEBUG: HORDE [imp] Load config file (conf.php; app: imp) [pid 51301 on line 109 of "/usr/share/psa-pear/pear/php/Horde/Registry/Loadconfig.php"]
ERR: HORDE [imp] Could not open secure TLS connection to the server. [pid 51301 on line 1157 of "/usr/share/psa-horde/imp/lib/Compose.php"]
DEBUG: HORDE 1. Horde_Core_Ajax_Application->doAction() /usr/share/psa-horde/services/ajax.php:61
2. call_user_func() /usr/share/psa-pear/pear/php/Horde/Core/Ajax/Application.php:175
3. IMP_Ajax_Application_Handler_Common->sendMessage()
4. IMP_Compose->buildAndSendMessage() /usr/share/psa-horde/imp/lib/Ajax/Application/Handler/Common.php:555 -
The following errors are found in
/var/log/maillog:PLESK_INFO: server postfix/smtpd[52260]: SSL_accept error from server.example.com[127.0.0.1]: -1
server postfix/smtpd[52260]: warning: TLS library problem: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:647:
server postfix/smtpd[52260]: lost connection after STARTTLS from server.example.com[127.0.0.1]
Cause
Incorrect settings in webmail configuration file /etc/psa-webmail/horde/horde/conf.php or in file /usr/share/psa-roundcube/config/config.inc.php.
Resolution
-
Connect to the server via SSH as root.
-
Edit configuration files with any text editor:
-
For Horde:
Correct settings in
/etc/psa-webmail/horde/horde/conf.php:CONFIG_TEXT: // send email with authorization on SMTP server
$conf['mailer']['params']['host'] = 'ssl://localhost';
$conf['mailer']['params']['port'] = 465;
$conf['mailer']['params']['auth'] = true;
$conf['mailer']['params']['username_auth'] = true;
$conf['mailer']['params']['password_auth'] = true;
$conf['mailer']['type'] = 'smtp'; -
For Roundcube:
Add / edit the following line in the file
/usr/share/psa-roundcube/config/config.inc.php:CONFIG_TEXT: $config['smtp_server'] = 'ssl://%z:465';
-
Comments
2 comments
For Plesk Onyx, we found that to get Roundcube to work when this type or error was logged, the following line needed to be appended to /usr/share/psa-roundcube/config/config.inc.php:
$config['smtp_server'] = 'ssl://%z:465';
Added the solution for Roundcube, thank you.
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