PHPMailer error, can't send

I've recently moved one of my websites to a new service provider and for some reason the forms have stopped working. My new provider is saying it's a problem with the script, but I'm using the same code on 2 other services and am having no such problems.

I'm using PHPMailer, authenticated via SMTP. The error I'm receiving is as follows:

SMTP -> ERROR: Failed to connect to server: Permission denied (13)SMTP Connect() failed. Message could not be sent.

Mailer Error: SMTP Connect() failed.

I've setup a very basic script as below for testing, but it's just not working on the new server, but yet the same script is working fine on another.

Can anyone tell me if it's something in the code or whether it's something my hosting provider needs to activate, I'm perplexed?

<?php
	ini_set('display_errors', 1);
	error_reporting(E_ALL);
	include_once('class.phpmailer.php');
		
	$mail             = new PHPMailer(); // defaults to using php "mail()"
	
	$body             = "<p><strong>Name:</strong> Name</p>";
	$body            .= "<p><strong>Email Address:</strong> Email</p>";
	$body            .= "<p><strong>Telephone:</strong> Tel</p>";
	
	$mail->From       = "sender@email.co.uk";
	$mail->FromName   = "sender";
	
	$mail->Subject    = 'Form';
	$mail->AltBody    = "Use an HTML compatible email viewer!";
	
	$mail->MsgHTML($body);
	
	$mail->AddAddress("email@email.co.uk");
		
	$mail->IsSMTP();
	$mail->SMTPAuth = "true";
	$mail->Username = "postmaster@server.co.uk"; 
	$mail->Password = "password"; 
	$mail->Host 	= "mail.server.co.uk";
	$mail->Port = 587;
	$mail->SMTPDebug = true;
	
	if(!$mail->Send())
	{
	   echo "Message could not be sent. <p>";
	   echo "Mailer Error: " . $mail->ErrorInfo;
	   exit;
	}
?>

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djfenomAsked:
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Jan SpringerConnect With a Mentor Commented:
The error message explicitly indicates that you are being refused when connecting to the server.  Either ports 25/587 are restricted and your new host is not in that list or auth account is not configured or the password configured is incorrect.

Your provider should be able to look at the mail configuration and in the mail logs to determine the problem.
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Jan SpringerCommented:
Ask your provider why you are getting a permission denied when trying to connect to the SMTP server.  Looks like a mail server configuration issue.
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ScorchDCommented:
Looks like you need to provide log in credentials for your new server, probably something like
$mail->SMTPAuth = true; $mail->Username = ""; $mail->Password = "";

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Jan SpringerCommented:
The author does have SMTP AUTH configured in the script above.

The provider needs to identify why the authid if failing.
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ScorchDCommented:
Apologies I missed that, yes its a question for your provider.
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Dave BaldwinFixer of ProblemsCommented:
Are you sending thru your new Host or some where else?  If it is somewhere else, does your new host allow outgoing connections thru port 587?
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djfenomAuthor Commented:
The SMTP authentication goes to an external provider, so it's nothing to do with the new host. The exact same script works on different servers?
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Dave BaldwinConnect With a Mentor Fixer of ProblemsCommented:
It only goes to an external provider if it is not blocked by the new host.  They are not required to let you connect to another SMTP provider.  Hosting companies often block services when they have had trouble like too much outgoing spam.
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Jan SpringerCommented:
That's usually why SMTP AUTH is implemented -- as another avenue to allow authorized users to send outbound email.
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