PHP email form seems to work, but no emails

1

I used the PHP contact form tutorial here on kirupa.com to make a contact form for my new website. When I click submit, I get the response that the message has been sent, but I don’t receive any email. When I first set up the script it was working fine, even after I added a couple of extra text fields. But now it won’t send me emails anymore…what’s wrong?

contact.html:


<form method="post" action="mailer.php"> 
<table width="400" height="120" border="0" cellpadding="0" cellspacing="0"> 
  <tr> 
    <td width="67" height="30" valign="middle"><span class="text"><b>Name:</b></span> <br /></td> 
    <td width="333" height="30" valign="middle"><input type="text" name="name" size="30" class="brdr" /></td> 
  </tr> 
  <tr> 
    <td height="30" valign="middle"><span class="text"><b>E-Mail:</b></span></td> 
    <td height="30" valign="middle"><input type="text" name="email" size="30"class="brdr"  />  </tr> 
  <tr> 
    <td height="30" valign="middle"><span class="text"><b>Phone:</b></span><br /></td> 
    <td height="30" valign="middle"><input type="text" name="phone" size="30" class="brdr" /></td> 
  </tr> 
  <tr> 
    <td width="67" height="30" valign="middle"><span class="text"><b>Website:</b></span><br /></td> 
   <td height="30" valign="middle"><input type="text" name="url" size="30" value="http://" class="brdr" /></td> 
    </tr> 
</table> 
<span class="text"><br /><br /> 
<b>What kind of project are you contacting us about?</b></span><br> 
  
<select size="1" name="drop_down" class="brdr" > 
<option>Please Select</option> 
<option>Graphic Design</option> 
<option>Web Design</option> 
<option>Both</option> 
<option>Other</option> 
</select><br><br /><br /> 

<span class="text"><b>What is the best way to get in touch with you?</b></span><br> 
<input type="checkbox" name="check[]" value="phone"> Phone<br> 
<input type="checkbox" name="check[]" value="email"> Email<br><br><br> 

<span class="text"><b>Message:</b></span><br> 
<textarea rows="9" name="message" cols="48"> 

</textarea><br /><br /> 
<input type="submit" value="Submit" name="submit"> 
</form>

mailer.php:


<?php 
if(isset($_POST['submit'])) { 
  
$to = "petronella@mail.com"; 
$subject = "Inquiry from website"; 
$name_field = $_POST['name']; 
$email_field = $_POST['email']; 
$phone_field = $_POST['phone']; 
$url_field = $_POST['url']; 
$message = $_POST['message']; 
$dropdown = $_POST['drop_down']; 

foreach($_POST['check'] as $value) { 
$check_msg .= "Contact by: $value
"; 
} 
  
$body = "From: $name_field
 E-Mail: $email_field
 Phone: $phone_field
 Website: $url_field
 $check_msg Project: $dropdown
 Message:
 $message
"; 
  
echo "Thank you $name_field, your message has been sent. We look forward to speaking with you!"; 
mail($to, $subject, $body); 
  
} else { 
echo "We're sorry, the message can not be sent at the moment, we might be experiencing network problems. Please try later, or contact us at mail@mail.com. Thank you!"; 
} 
?>