php mail function issue.

Hi, I am trying to send mail using mail function of php, it's working fine on one server and it fails to send mails on other server.On first server is showing message "Mail Sent Successfully" and on other it is showing "Mail Sending Failed".In my local system it is also working fine,this code was working fine some days ago but suddenly it stopped working,this problem might be due to some server configuration changes, but i am not getting what exactly is the issue , so that i can resolve it.what might be the reasons?Any body can explain me....... <?php if(isset($_REQUEST['send'])){ $to = $_POST['email']; $subject = $_POST['subject']; $message = $_POST['message']; $headers = 'MIME-Version: 1..0' . "\r\n"; $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; $headers .= 'From: SCONNECT <sconnect@saviance.com>' . "\r\n"; $headers .= 'Cc: kiran.jha@softwarefolks.com' . "\r\n"; if(mail ($to, $subject, $message, $headers )){ $msg = "Mail Sent Successfully"; }else { $msg = "Mail Sending Failed"; } } ?> <html> <head> <title> Mail test from script </title> </head> <body> <table width='60%' align='center' style="border:1px solid #000"> <?php if($msg == ""){?> <form method='post' action='mailtest.php'> <tr><td colspan='2' align='center'><h4>This page is used to test the mail from script.</h4></td></tr> <tr><td>Email: </td><td> <input name='email' type='text' /></td></tr> <tr><td>Subject: </td><td><input name='subject' type='text' /></td></tr> <tr><td>Message:</td><td><textarea name='message' rows='15' cols='40'></textarea></td></tr> <tr><td colspan='2' align='center'> <input type='submit' value='Send Mail' name='send'/></td></tr> </form> <?php }else{?> <tr><td><?php echo $msg;?></td></tr> <?php }?> </table> </body> </html> Regards. Vikas Batra Save all your chat conversations. Find them online at http://in.messenger.yahoo.com/webmessengerpromo.php