Hi
I have an issue where some file attaching fails with "file upload failed". It only happens sometimes, not all the time.
I have turned on debug logging in apache 2.4 and roundcube 1.2.5 (with all plugins disabled):
$config['per_user_logging'] = true;
$rcmail_config['smtp_log'] = true;
$rcmail_config['log_logins'] = true;
$rcmail_config['sql_debug'] = true;
$rcmail_config['imap_debug'] = true;
$rcmail_config['ldap_debug'] = true;
$rcmail_config['smtp_debug'] = true;
Roundcube 1.2.5 (latest stable) with all plugins disabled. Ubuntu 14.04.
It seems to be mainly Safari and IE 11 (windows10). I can see the files that work, they are uploaded to the "temp" directory.
I suspect the issue is client side, as the developer tools shows the upload POST request in "pending" state and I do not get a new entry into apache logs. I have also enabled Xdebug.