PHPmailer help

[zfred09]

When using phpmailer through a smtp I get this error message: [color=red]Mailer Error: Language string failed to load: recipients_failed[/color]
I have searched for at least a couple hours for the solution to this problem, have tried many different fixes and still no result.  How do I fix this problem?
[code]
                                ini_set("include_path", ".:/path/to/phpmailer/dir");
ini_set("include_path", ".:/path/to/smtp/dir");
ini_set("include_path", ".:/path/to/phpmailer.lang-en/dir");
                                $mail = new PHPMailer();

$mail->IsSMTP();                                      // set mailer to use SMTP
$mail->Host = "smtp.mydomain.com";  // specify main and backup server
$mail->SMTPAuth = true;    // turn on SMTP authentication
$mail->Username = "username";  // SMTP username
$mail->Password = "pass"; // SMTP password

$mail->From = "support@mydomain.com";
$mail->AddAddress("blah@gmail.com");

$mail->Subject = "Blah";
$mail->Body = " Email text"; [/code]

[weknowtheworld]

This error usually occurs because relaying is not allowed on the SMTP server from the IP address of the web server. Go to the configuration of your SMTP server and turn relaying on for your IP address and try again.