Nobody/Anonymous - 2008-03-06

We use authsmtp.com as our mail-sending service, I would like to set up phpbt to send mail this way.  I assume I make changes to config.php ?

// Mail parameters
define('SMTP_EMAIL', false);
define('SMTP_HOST', "localhost");
define('SMTP_PORT', 25);
define('SMTP_HELO', null);
define('SMTP_AUTH', false);
define('SMTP_AUTH_USER', "");
define('SMTP_AUTH_PASS', "");
define('RETURN_PATH', null);

I changed this section to say...

// Mail parameters
define('SMTP_EMAIL', true);
define('SMTP_HOST', "mail.authsmtp.com");
define('SMTP_PORT', 2525);
define('SMTP_HELO', null);
define('SMTP_AUTH', true);
define('SMTP_AUTH_USER', "XXXX");
define('SMTP_AUTH_PASS', "XXXX");
define('RETURN_PATH', null);

but it seems emails are not being sent.  What is the procedure I should be following?   Thank you.