title: "SMTP Error: Could not authenticate" in PHPMailer
body: <p>I'm using PHPMailer in a Simple Script For Send Email's Through Gmail, and I'm getting an "Unknown Error" (At least for me!):</p>
  
  <blockquote>
    <p>SMTP Error: Could not authenticate.
    Error: SMTP Error: Could not
    authenticate.</p>
    
    <p>SMTP server error: 5.7.1 Username and
    Password not accepted. Learn more at
    535 5.7.1
    <a href="http://mail.google.com/support/bin/answer.py?answer=14257" rel="noreferrer">http://mail.google.com/support/bin/answer.py?answer=14257</a>
    p38sm2467302ybk.16</p>
  </blockquote>
  
  <p>I've read about Configure OpenSSL For SSL/TLS Connections, and I did it. Apache And PHP Are properly-Configured (With OpenSSL extension Running in PHP and mod_ssl running in Apache 2.2.16).</p>
  
  <p>This is The PHP Script:</p>
  
  <pre><code> &lt;?php
    require_once ("PHPMailer\class.phpmailer.php");
    $Correo = new PHPMailer();
    $Correo-&gt;IsSMTP();
    $Correo-&gt;SMTPAuth = true;
    $Correo-&gt;SMTPSecure = "tls";
    $Correo-&gt;Host = "smtp.gmail.com";
    $Correo-&gt;Port = 587;
    $Correo-&gt;UserName = "foo@gmail.com";
    $Correo-&gt;Password = "gmailpassword";
    $Correo-&gt;SetFrom('foo@gmail.com','De Yo');
    $Correo-&gt;FromName = "From";
    $Correo-&gt;AddAddress("bar@hotmail.com");
    $Correo-&gt;Subject = "Prueba con PHPMailer";
    $Correo-&gt;Body = "&lt;H3&gt;Bienvenido! Esto Funciona!&lt;/H3&gt;";
    $Correo-&gt;IsHTML (true);
    if (!$Correo-&gt;Send())
    {
      echo "Error: $Correo-&gt;ErrorInfo";
    }
    else
    {
      echo "Message Sent!";
    }
  ?&gt;
  </code></pre>
  
  <p>The Username and Password are OK, And I tried in Thunderbird, without any problem. 
  I've also Used SSL Authentication and Port 465, getting the same Error. </p>