-----Original Message-----
From: Mail Delivery System
[mailto:Mailer-Daemon@host40.registrar-servers.com]
Sent: Tuesday, 15 August 2017 11:50 AM
To: jensen@jmsunionfreight.com.sg
Subject: Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

 ricky.choo@costar.com.sg
   host mailer.costar.com.sg [203.116.35.71]
   SMTP error from remote mail server after initial connection:
   554 Transaction failed
 katherine.mah@costar.com.sg
   host mailer.costar.com.sg [203.116.35.71]
   SMTP error from remote mail server after initial connection:
   554 Transaction failed
 calvin.lim@costar.com.sg
   host mailer.costar.com.sg [203.116.35.71]
   SMTP error from remote mail server after initial connection:
   554 Transaction failed
Reporting-MTA: dns; host40.registrar-servers.com

Action: failed
Final-Recipient: rfc822;calvin.lim@costar.com.sg
Status: 5.0.0
Remote-MTA: dns; mailer.costar.com.sg
Diagnostic-Code: smtp; 554 Transaction failed

Action: failed
Final-Recipient: rfc822;katherine.mah@costar.com.sg
Status: 5.0.0
Remote-MTA: dns; mailer.costar.com.sg
Diagnostic-Code: smtp; 554 Transaction failed

Action: failed
Final-Recipient: rfc822;ricky.choo@costar.com.sg
Status: 5.0.0
Remote-MTA: dns; mailer.costar.com.sg
Diagnostic-Code: smtp; 554 Transaction failed