[Email Library] - Failed to send AUTH LOGIN command - Encryption Needed

Hi.

Today i go some problem with the email library where the server does not support  SMTP plain text auth.

PHP Code:

   $config['useragent']    = "CodeIgniter";
    $config['mailpath']     = "/usr/bin/sendmail"; // or "/usr/sbin/sendmail"
    $config['wordwrap']     = TRUE;
    $config['mailtype']     = 'html';
    $config['charset']      = strtoupper(get_option('smtp_email_charset'));
    $config['newline']      = "\r\n";
    $config['crlf']         = "\r\n";
    $config['protocol']     = 'smtp';
    $config['smtp_host']    = 'ssl://domain.com'
    $config['smtp_port']    = 465;
    $config['smtp_timeout'] = '30';
    $config['smtp_user']    = '[email protected]';
    $config['smtp_pass']    = 'passwordgoeshere'; 


This is the current configuration.
When echo the email print debugger the following error occurs:
Failed to send AUTH LOGIN command.Error 535 5.7.8 Error: Authentication failed:encryption needed to use mechanism.

I was able to see in the email library Codeigniter use AUTH LOGIN with unencrypted BASE64 encoding.
To support full web standards, Codeigniter should be able to use CRAM-MD5 or DIGEST-MD5 for SMTP authentication.

Any suggestions how this problem could be solved or possible Codeigniter bug?

Thanks.