It is confirmed that php and phpmailer is working as tested with the script below that email is successfully sent and received:

<?php
require("class.phpmailer.php");
//include("class.smtp.php"); // optional, gets called from within class.phpmailer.php if not already loaded

$mail = new PHPMailer();

$body = "This is email from smtp google";

$mail->IsSMTP(); // telling the class to use SMTP
$mail->Host = "192.168.XX.XX"; // SMTP server
$mail->SMTPDebug = 1; // enables SMTP debug information (for testing)
// 1 = errors and messages
// 2 = messages only
$mail->SMTPAuth = true; // enable SMTP authentication
$mail->SMTPSecure = "tls"; // sets the prefix to the servier
$mail->Host = "192.168.XX.XX"; // sets the SMTP server
$mail->Port = 25; // set the SMTP port for the GMAIL server
$mail->Username = "pl.khor@xxx.com"; // username
$mail->Password = "password"; // password

$mail->SetFrom('pl.khor@xxx.com', 'First Last');

$mail->AddReplyTo("pl.khor@xxx.com","First Last");

$mail->Subject = "PHPMailer Test Subject via smtp , basic";

$mail->AltBody = "To view the message, please use an HTML compatible email viewer!"; // optional, comment out and test

$mail->MsgHTML($body);

$address = "pl.khor@xxx.com";
$mail->AddAddress($address, "kpl");

if(!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
} else {
echo "Message sent!";
}

?>