Php mail function won't work - php

Question

After researching several questions and try multiple options, I couldn't make it work still!
I have this contact form that won't be sent.
<form id="contact" method="post" action="process.php">
<fieldset>
<label for="name">Name:</label>
<input type="text" name="name" placeholder="Your name" title="Your name" class="required">
<label for="email">E-mail:</label>
<input type="email" name="email" placeholder="yourmail#domain.com" title="Your e-mail address" class="required email">
<label for="phone">Phone number:</label>
<input type="tel" name="phone" placeholder="[phone]" title="Your phone number">
<p> </p>
<input type="radio" name="rsvp" value="si">
<span class="destacar-contacto">ACCEPT</span> the invitation<br>
<input type="radio" name="rsvp" value="no">
<span class="destacar-contacto">REJECT</span> the invitation<br>
<p> </p>
<p class="negrita-contacto">If you're coming: what would you like better?</p>
<input type="radio" name="menu" value="carne"> Calf sirloin with foie<br>
<input type="radio" name="menu" value="pescado"> Marinade salmon with dill<br>
<input type="radio" name="menu" value="vegetariano"> Fungus risotto<br>
<label for="mas">Is someone coming with you? Let us know their name and their prefered menu here:</label>
<textarea name="mas"></textarea>
<label for="message">Aditional message:</label>
<textarea name="message"></textarea>
<input type="submit" name="submit" class="boton" id="submit" value="Enviar" />
</fieldset>
</form>
And this is the PHP function:
$name = strip_tags($_POST['name']);
$email = strip_tags($_POST['email']);
$phone = strip_tags($_POST['phone']);
$rsvp = strip_tags($_POST['rsvp']);
$menu = strip_tags($_POST['menu']);
$mas = strip_tags($_POST['mas']);
$message = strip_tags($_POST['message']);
mail( "formulario#ourdreamjourney.com", "rsvp",
"Name: $name\nEmail: $email\nPhone: $phone\nRsvp: $rsvp\nMenu: $menu\nMas: $mas\nMessage: $message\n",
"From: Our Dream Journey <mail#hotmail.com>" );
I tried randomly to send just "Name: $name" and I got an e-mail! But then put all the other options back and nothing again...
Someone can help me please?
Thank you so much in advance! :)

Answer 1

You can use phpMailer class. Download this library from here. Many example with to send email.
http://code.google.com/a/apache-extras.org/p/phpmailer/downloads/list
Edit:
Try this code
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
// Additional headers
$headers .= 'From:Our Dream Journey <mail#hotmail.com>' . "\r\n";
if(mail( "formulario#ourdreamjourney.com", "rsvp",nl2br("Name: $name\nEmail: $email\nPhone: $phone\nRsvp: $rsvp\nMenu: $menu\nMas: $mas\nMessage: $message\n"),
$headers )) echo "Sent"; die;

Answer 2

Try to add all the information to the header element:
$headers = "From: myplace#here.com\r\n";
$headers .= "Reply-To: myplace2#here.com\r\n";
$headers .= "Return-Path: myplace#here.com\r\n";
$headers .= "CC: sombodyelse#noplace.com\r\n";
$headers .= "BCC: hidden#special.com\r\n";
Maybe there also other options that I don't remember like MIME
Maybe another problem is that some of the variables break the string(close the string). Try to print it somewhere,a file with file_put_contents or just echo it