สอบถามหน่อยค่ะ ทำ contact form แล้วให้ user กรอกเมล แต่พอเช็คเมลกลายเป็นเมลที่เราใช้ gmail ส่งไปแก้ยังไงค่ะ

<form action="sendmail.php" method="post" name="frmMain">
<div class="contact">
	<!--<div class="contact_left BodyStyle"><strong>ถึง</strong></div>
    <div class="contact_right BodyStyle"><input name="txtTo" type="text" id="txtTo"></div>-->
    <div class="contact_left BodyStyle"><strong>หัวข้อ</strong></div>
    <div class="contact_right BodyStyle"><input name="txtSubject" type="text" id="txtSubject"></div>
    <div class="contact_left BodyStyle" style="height:320px;"><strong>รายละเอียด</strong></div>
    <div class="contact_right BodyStyle" style="height:320px;"><textarea name="txtDescription" cols="30" rows="4" id="txtDescription" style="width:300px; height:300px;"></textarea></div>
    <div class="contact_left BodyStyle"><strong>ชื่อผู้ส่ง</strong></div>
    <div class="contact_right BodyStyle"><input name="txtFormName" type="text"></div>
    <div class="contact_left BodyStyle"><strong>Email</strong></div>
    <div class="contact_right BodyStyle"><input name="txtFormEmail" type="text"></div>
    <div class="clear contact_button"><input type="image" name="Submit" value="Send" src="images/button_submit.png"/></div>
</div>
</form>

<?php
	require_once('class.phpmailer.php');
	$mail = new PHPMailer();
	$mail->IsHTML(true);
	$mail->IsSMTP();
	$mail->SMTPAuth = true; // enable SMTP authentication
	$mail->SMTPSecure = "ssl"; // sets the prefix to the servier
	$mail->Host = "smtp.gmail.com"; // sets GMAIL as the SMTP server
	$mail->Port = 465; // set the SMTP port for the GMAIL server
	$mail->Username = "[email protected]"; // GMAIL username
	$mail->Password = "xxxxxxx"; // GMAIL password
	$mail->From = $_POST["txtFormEmail"]; // "[email protected]";
	//$mail->AddReplyTo = "[email protected]"; // Reply
	$mail->FromName = $_POST["txtFormName"];  // set from Name
	$mail->Subject = $_POST["txtSubject"]; 
	$mail->Body = nl2br($_POST["txtDescription"]);

	$mail->AddAddress("[email protected]", "Webmaster thungluang-rb.go.th"); // to Address


	//$mail->AddCC("[email protected]", "Mr.Member ShotDev"); //CC
	//$mail->AddBCC("[email protected]", "Mr.Member ShotDev"); //CC

	$mail->set('X-Priority', '1'); //Priority 1 = High, 3 = Normal, 5 = low

	$mail->Send(); 
?>