SMTP Error: The following recipients failed:XXXX

So i just received this error when trying to send an mail using PHPmailer from my site.

SMTP Error: The following recipients failed: XXXX

I tried to set $mail->SMTPAuth = true; to false but no result. And i tried to change the password for the mail account and update that in the sendmailfile.php but still the same.

It worked as intended two days ago, now i don't know why this is happening. Since there ain't any error code either i don't really know where to begin and since it did work..

Anyone who might know?

    $mail = new PHPMailer();
    $mail->CharSet = 'UTF-8';
    $mail->ContentType = 'text/html';
    $mail->IsSMTP();
    $mail->Host = "HOST.COM";
    $mail->SMTPAuth = true;
    $mail->Username = "MAIL_TO_SEND_FROM"; 
    $mail->Password = "PASSWORD"; 
    $mail->From = "MAIL_TO_SEND_FROM";
    $mail->FromName = "NAME";
    $mail->AddAddress($safeMail);
    $mail->AddReplyTo("no-reply@example.COM", "No-reply");
    $mail->WordWrap = 50;
    $mail->IsHTML(true);
    $sub = "SUBJECT";
    mail->Subject = ($sub);

Solution

Maybe your class.phpmailer.php file is corrupt. Download the latest version from : https://github.com/PHPMailer/PHPMailer

$mail->SMTPDebug  = 1; // enables SMTP debug information (for testing)
                               // 1 = errors and messages
                               // 2 = messages only