Warning: Header may not contain more than a single header, new line detected. in

[dreamer86]

Prova cosi:

if (!validEmail($Email))   {
$what3 = "contacts.php?msg=the email is incorrect&name=".$_REQUEST['Name']."&company=".$_REQUEST['Company']."&email=".$_REQUEST['Email']."&phone=".$_REQUEST['Phone']."&country=".$_REQUEST['Country']."&notes=".$_POST['Notes']; 
$what3 = rawurlencode(trim($what3)); 
header("Location: $what3");
}else{             
$what2 = "contacts.php?msg=Please fill the mandatory fields, thank you&name=".$_REQUEST['Name']."&company=".$_REQUEST['Company']."&email=".$_REQUEST['Email']."&phone=".$_REQUEST['Phone']."&country=".$_REQUEST['Country']."&notes=".$_POST['Notes'];
$what2 = rawurlencode(trim($what2)); 
header("Location: $what2");  
}