PHPMailer和Mail（）都失败了吗？ 来自地址失败

Question

require_once("libphp-phpmailer/class.phpmailer.php");

$mail = new PHPMailer();

$mail->IsSMTP();
$mail->Host = "smtp.comcast.net";
//$mail->Host = "localhost";

//$mail->SMTPAuth = true;
$mail->WordWrap = 60;

//$mail->SetFrom("[e-mail]");
$mail->SetFrom("[e-mail]");

$mail->AddAddress("[e-mail]");

$mail->Subject = "BUY! Receipt";
$mail->Body = 
    "You just bought {$_POST["symbol"]}: 

";

if ($mail->Send() == false) {
    die($mail->ErrInfo);
}

I get this error when I run the above code:

Not sure what it means. I'm fairly new to PHP too so maybe I'm missing something?

If I try to use the generic mail() function that also fails. Although it doesn't give any error message.

Answer 1

I had no default SMTP settings so naturally the default mail() wasn't working. I configured things to use first my gmail account/smtp server and then later (so I could spoof headers) my hostgator smtp server.

This resolved the issue.