Free SMTP PHP Mail Script

<?php
    $from="sales@xenserv.co.uk";
  $namefrom="Sales Department";
  $to = "receivers@email.com";
  $nameto = "To Name";
  $subject = "Email Subject";
  $message = "Email Message goes here.....";
  
  smtp($from, $namefrom, $to, $nameto, $subject, $message,);

?>

    <?php
    function smtp ($from, $namefrom, $to, $nameto, $subject, $message) {
        $smtpServer = "192.168.xxx.xxx";   //ip address of the mail server or hostname
        $port = "25";					 // should be 25 by default, 
        $timeout = "45";				 // typical timeout. try 45 for slow servers
        $username = "sales@xenserv.co.uk"; // the login for your smtp
        $password = "myPA$$";			// the password for your smtp
        $localhost = "127.0.0.1";	   // Defined IP for the web server.  
        $newLine = "\r\n";			 // aka, carrage return line feed. var just for newlines in MS
        $secure = 0;				  // change to 1 if your server is running under SSL
        //connect to the host and port
        $smtpConnect = fsockopen($smtpServer, $port, $errno, $errstr, $timeout);
        $smtpResponse = fgets($smtpConnect, 4096);
                
        //you have to say HELO again after TLS is started
           fputs($smtpConnect, "HELO $localhost". $newLine);
           $smtpResponse = fgets($smtpConnect, 4096);
           $logArray['heloresponse2'] = "$smtpResponse";
        //request for auth login
        fputs($smtpConnect,"AUTH LOGIN" . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['authrequest'] = "$smtpResponse";
        
        //send the username
        fputs($smtpConnect, base64_encode($username) . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['authusername'] = "$smtpResponse";
        
        //send the password
        fputs($smtpConnect, base64_encode($password) . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['authpassword'] = "$smtpResponse";
        
        //email from
        fputs($smtpConnect, "MAIL FROM: <$from>" . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['mailfromresponse'] = "$smtpResponse";
        
        //email to
        fputs($smtpConnect, "RCPT TO: <$to>" . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['mailtoresponse'] = "$smtpResponse";
        
        //the email
        fputs($smtpConnect, "DATA" . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['data1response'] = "$smtpResponse";
        
        //construct headers
        $headers = "MIME-Version: 1.0" . $newLine;
        $headers .= "Content-type: text/html; charset=iso-8859-1" . $newLine;
        $headers .= "To: $nameto <$to>" . $newLine;
        $headers .= "From: $namefrom <$from>" . $newLine;
        
        //observe the . after the newline, it signals the end of message
        fputs($smtpConnect, "To: $to\r\nFrom: $from\r\nSubject: $subject\r\n$headers\r\n\r\n$message\r\n.\r\n");
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['data2response'] = "$smtpResponse";
        
        // say goodbye
        fputs($smtpConnect,"QUIT" . $newLine);
        $smtpResponse = fgets($smtpConnect, 4096);
        $logArray['quitresponse'] = "$smtpResponse";
        $logArray['quitcode'] = substr($smtpResponse,0,3);
        fclose($smtpConnect);
        //a return value of 221 in $retVal["quitcode"] is a success
        return($logArray);
        }
?>