Email configuration

[tempman]

Hello,
I've a problem with the email configuration. I have:

$g_phpMailer_method = 2
$g_smtp_host = 'xxx.xxx.xxx';
$g_smtp_username = 'xxx';
$g_smtp_password = 'xxx';

When I run admin\check.php, I have:

The following recipients failed: xxx@xxxx.xxx

I have in C:\phpmailer\... (the files of phpmailer) and in php.ini include_path = ".;c:\phpmailer". The phpmailer is the version that comes with mantis (core\phpmailer). I have 1.0.0rc5 version of mantis.

If I do telnet to the smtp server it works good ... I don't understand what happens. Someone can help me? Thanks beforehand.

Cheers...