PHPMailler does not send if sending and authenticating emails are NOT the same

Well, first I want to say that I've searched everywhere but I did not find an answer that worked. Just unsuccessful attempts on the web.

I'm talking about PhPMailler .

I need to send authenticated emails from the site .

But I have one more difficulty : the email you send (From) will not always be the authentication server .

UOL Host and when sending email is the same as authentication

I wanted to know if there is a way around this.

Here's what I did:

Note: The class include is made in another file

Timing : Another thing I would also like to know is how to set up an account of type naoresponda@.. . for NO messages and we received emails there with sender nãoresponda ?

<?php

  class EmailEnviarDao {

    public function __construct() {}

    public function enviaEmail($email, $constantes)  {

      $caixaPostalServidorNome = $constantes->getTituloSite();
      $caixaPostalServidorEmail = "contato@".$constantes->getDominioSite();
      $caixaPostalServidorSenha = "senha";

      $enviaFormularioParaNome = $email->getNomeAlvo();
      $enviaFormularioParaEmail = $email->getEmailAlvo();
      $remetenteNome  = $email->getNomeRemete();
      $remetenteEmail = $email->getEmailRemete();
      $assunto =  $email->getAssunto();   
      $mensagem = $email->getDescricao();

      $mail = new PHPMailer();

      $mail->IsSMTP();
      $mail->SMTPAuth  = true;
      $mail->SMTPDebug  = 0;
      $mail->Charset   = 'utf8_decode()';
      $mail->Host  = 'smtp.'.substr(strstr($caixaPostalServidorEmail, '@'), 1);
      $mail->Port  = '587';
      $mail->Username  = $caixaPostalServidorEmail;
      $mail->Password  = $caixaPostalServidorSenha;
/*
      $mail->From  = $remetenteEmail;
      $mail->FromName  = utf8_decode($remetenteNome);
*/
      $mail->From  = $caixaPostalServidorEmail;
      $mail->FromName  = utf8_decode($caixaPostalServidorNome);
      $mail->IsHTML(true);
      $mail->Subject  = utf8_decode($assunto);
      $mail->Body  = utf8_decode($mensagem);


      $mail->AddAddress($enviaFormularioParaEmail,utf8_decode($enviaFormularioParaNome));

      if($mail->Send()){

          return array("success"=>1,"errors"=>"0K");

      } else {

          return array("success"=>0,"errors"=>$mail->ErrorInfo);

      } 

    }   

  }

?>