PHP Mailer fails on MS Exchange - php

Question

I am trying to send an email via PHP mailer and am failing miserably. The error message I am getting is as follows:
2014-08-12 12:21:40 SMTP ERROR: Failed to connect to server: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. (10060) 2014-08-12 12:21:40 SMTP connect() failed. Mailer Error: SMTP connect() failed.
My code is as follows. I do not know where I am going wrong with this. I am pretty sure all information is correct, with the exception of the port. Given this is using microsoft exchange I am using port 587 -is this where I am going wrong?
<?php
include("phpmailer/class.phpmailer.php");
$mail = new PHPMailer();
$body = "HellooooO";
$mail->IsSMTP(); // telling the class to use SMTP
$mail->SMTPSecure = "tls";
$mail->SMTPDebug = 1; // enables SMTP debug information (for testing)
// 1 = errors and messages
// 2 = messages only
$mail->SMTPAuth = true;
$mail->Host = "My server name";
$mail->Port = 587;
$mail->Username = "My MS exchange email address";
$mail->Password = "Password";
$mail->SetFrom('My MS exchange email address', 'First Last');
$mail->Subject = "PHPMailer Test Subject via smtp, basic with authentication";
$mail->AltBody = "To view the message, please use an HTML compatible email viewer!"; // optional, comment out and test
$mail->MsgHTML($body);
$address = "test email address";
$mail->AddAddress($address, "John Doe");
if(!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
} else {
echo "Message sent!";
}
?>
-----------EDIT-------------------
Following Synchro's remark that I am not using the latest version of PHP Mailer, I have amended the code as follows. I am still not able to send emails and the error message is the same... How do I check whether the TLS port is open and working as expected?
<?php
require 'phpmailer/PHPMailerAutoload.php';
$mail = new PHPMailer;
$mail ->SMTPDebug = 1;
$mail->isSMTP();
$mail->Host = 'My Server';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = 'My email address';
$mail->Password = 'My Password';
$mail->SMTPSecure = 'tls';
$mail->From = 'My email address';
$mail->FromName = 'Mailer';
$mail->addAddress('My Test Email address', 'Joe User');
$mail->WordWrap = 50;
$mail->isHTML(true);
$mail->Subject = 'Here is the subject';
$mail->Body = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
Regards and thank you,
G.

Answer 1

Not sure if this has been cured, however this is typical firewall behavior. You could use something like Wireshark to see if the server is recieving the request.