Could not access file: SMTP Error: Could not authenticate. zoho

Good evening! Can you help me resolve this error? I am using phpmailer and it is returning me error or error log is below!

Log:

Could not access file: SMTP -> FROM SERVER:CLIENT -> SMTP: EHLO imovel.vemproconsorciooficial.com.br SMTP -> FROM SERVER: SMTP -> ERROR: EHLO not accepted from server: CLIENT -> SMTP: HELO imovel.vemproconsorciooficial.com.br SMTP -> FROM SERVER: SMTP -> ERROR: HELO not accepted from server: CLIENT -> SMTP: AUTH LOGIN SMTP -> ERROR: AUTH not accepted from server: SMTP -> NOTICE: EOF caught while checking if connectedSMTP Connect() failed.

php script used:

require_once('phpmailer/class.phpmailer.php');
$nome = addslashes($_POST['nome']);
$email = addslashes($_POST['email']);
$telefone = addslashes($_POST['telefone']);
// Instancia o objeto $mail a partir da Classe PHPMailer
$mail = new PHPMailer();
//Recupera dados do formulário.
$assunto = "";
$assunto .= "<strong>Contato Site Protons</strong><br />";
$assunto .= utf8_decode("<strong>Nome:</strong> $nome<br />");
$assunto .= utf8_decode("<strong>Email:</strong> $email<br />");
$assunto .= utf8_decode("<strong>Telefone:</strong> $telefone<br />");
$mail->IsHTML(true);
//Informa que será utilizado o SMTP para envio do e-mail
$mail->SMTPDebug=2;
$mail->IsSMTP();
//Informa que a conexão com o SMTP será autênticado
$mail->SMTPAuth = true;
// Porta para autenticação smtp;
$mail->Port = '465';
//Configuração de HOST do SMTP
$mail->Host = "smtp.zoho.com"; //Verifique qual o SMTP do seu domínio
//Usuário para autênticação do SMTP
$mail->Username = "comercial@vemproconsorciooficial.com.br";
//Senha para autênticação do SMTP
$mail->Password = "senha"; //Sua senha do e-mail
//Titulo do e-mail que será enviado
$mail->Subject = utf8_decode("Novo LEAD de Imóvel - Vem pro Consórcio.");
//Preenchimento do campo FROM do e-mail
$mail->From = $mail-> Username;
$mail->FromName = "Vem pro Consórcio";
//Endereço para a qual o e-mail será enviado
$mail->AddAddress('comercial@vemproconsorciooficial.com.br');
//Conteúdo do e-mail
$mail->Body = "<html>
<head>
<title>Simulação de Imóvel - Vem pro Consórcio.</title>
</head>
<body>
<font face=\"Arial\" size=\"4\" color=\"#333333\"><br />
$assunto
</font>
</body>
</html>";
$mail->AddAttachment($arquivo_caminho, $arquivo_nome);
$mail->AddEmbeddedImage($arquivo_caminho, $arquivo_caminho, $arquivo_nome, "Content-Transfer-Encoding: 8bits\n", "Content-Type: text/html; charset=\"ISO-8859-1\"\n\n");
$mail->AltBody = $mail->Body;
//Dispara o e-mail
$enviado = $mail->Send();
//Imprime sucesso.
if($enviado)
//se for enviado direciona para...
echo "<script>alert('Teremos um prazer imenso em atendê-lo! Nossa equipe entrara em contato o mais breve o possível.');</script>";
else
//se der erro volta para...
echo "<script>alert('Ocorreu um erro!');</script>";

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