php_network_getaddresses: getaddrinfo failed: No address associated with hostname (0)

[romuloinnocencio]

2014-12-30 23:54:03 SMTP ERROR: Failed to connect to server: php_network_getaddresses: getaddrinfo failed: No address associated with hostname (0)
SMTP connect() failed.

What's this means?

I try to my domain, jscomunicacaovisual.com;
I created a email. contato@jscomunicacaovisual.com

---

require_once('class.phpmailer.php');

/*abaixo as veriaveis principais, que devem conter em seu formulario*/
$nomeDestinatario = 'JS Comunicação Visual';
$destinatarios = 'contato@jscomunicacaovisual.com';
$usuario = 'contato@jscomunicacaovisual.com';
$senha = '*********';

/*********************************** A PARTIR DAQUI NAO ALTERAR ************************************/

$To = $destinatarios;
$Subject = $assunto;
$Message = $dados;

$Host = 'smtp.'.substr(strstr($usuario, '@'), 1);

$Username = $usuario;
$Password = $senha;
$Port = "587"; 

$mail = new PHPMailer();
$body = $dados;

$mail->CharSet = 'UTF-8';

$mail->IsSMTP(); // telling the class to use SMTP
$mail->Host = $Host; // SMTP server
$mail->SMTPDebug = 1; // enables SMTP debug information (for testing) // 1 = errors and messages // 2 = messages only
$mail->SMTPAuth = true; // enable SMTP authentication
$mail->Port = $Port; // set the SMTP port for the service server
$mail->Username = $Username; // account username
$mail->Password = $Password; // account password

$mail->SetFrom($usuario, $nomeDestinatario);
$mail->Subject = $Subject;
$mail->MsgHTML($body);
$mail->AddAddress($To,'');

/* ENVIO */

if( !$mail -> Send() ){
    return mail;
} else { 
    return 1;
}

[Synchro]

It means that either the address you are trying to connect to does not have a DNS entry, or your DNS is not working. Please read the troubleshooting guide. You also need to update your PHPMailer.