Phpmailer & Zimbra Server

[paukacang]

hello,

i'm just setup zimbra open source colaboration server on ubuntu 8.04. it running smooth with ms outlook. i can send & received email. i'm software developer using php. just make testing with my php script to send email using zimbra server. until now failed. here my php script.

PHP Code:

require_once ('email/class.phpmailer.php');
$mail = new PHPMailer();
$mail->IsSMTP(); 
$mail->SMTPAuth = true;
$mail->Host = 'abc.com.my';
$mail->SMTPSecure = 'tls'; 
$mail->Port = 465;
$mail->SMTPDebug = "true";   
$mail->Username = 'myname';
$mail->Password = 'mypassword';
$mail->SetFrom('myname@abc.com.my', 'Kamrul Arifin Bin Ngah');
$mail->AddAddress('otheruser@abc.com.my', 'Administrator');
$mail->Subject = 'PHPMailer Message';
$mail->Body = 'This e-mail is sent through PHPMailer.';
//$mail->AddAttachment('path/logo.png', 'logo.png');
if(!$mail->Send()) {
  echo 'Mailer error: '.$mail->ErrorInfo;
} else {
  echo 'Message has been sent.';
} 


when i tried sending email from ubuntu my application server outside from zimbra local area network but failed. here the error when i run the script

Language string failed to load: tls Mailer error: Language string failed to load: tls

error from zimbra log

Nov 9 13:01:46 mail postfix/smtpd[4555]: warning: 115.132.160.122: hostname 132.115.in-addr.arpa verification failed: Name or service not known
Nov 9 13:01:46 mail postfix/smtpd[4555]: connect from unknown[115.132.160.122]
Nov 9 13:01:46 mail postfix/smtpd[4555]: setting up TLS connection from unknown[115.132.160.122]
Nov 9 13:01:56 mail postfix/smtpd[4555]: SSL_accept error from unknown[115.132.160.122]: -1
Nov 9 13:01:56 mail postfix/smtpd[4555]: warning: TLS library problem: 4555:error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:578:
Nov 9 13:01:56 mail postfix/smtpd[4555]: lost connection after CONNECT from unknown[115.132.160.122]
Nov 9 13:01:56 mail postfix/smtpd[4555]: disconnect from unknown[115.132.160.122]

any expert can help me?