Bounce Back messages when sending external mail via Exchange 2003
Posted on 2007-10-08
I'm having an issue with Exchange 2003. We have a network extending to Europe. Apparently, our Exchange server is redirecting our (US) mail through their exchange server (France). Today, they had a DNS issue which was resolved and now when we try to send mail out, the emails still go through their exchange server (France) and we get a bounce back message:
The message could not be delivered because the recipient's destination email system is unknown or invalid. Please check the address and try again, or contact your system administrator to verify connectivity to the email system of the recipient.
< FRBTFW-01.xxx-xxxxx.com #5.1.2>
Not all external mail gets bounced back.
In order to troubleshoot this:
1.) How can I get our US mail to send out to the Internet via our Exchange server instead of the one in Europe?
2.) How can determine the source of the above error to see if it is a DNS issue? How can I trace an email message to see where the error comes from?
Thanks for your all help