Exchange 2003 does not necessarily have to use the IMC as this is for backward compatibility for Exchange 5.x and Exchange 2000 servers. 

Check your Routing Groups and make sure that there is an SMTP connector configured and that both servers are listed there.

This should work if both servers are part of the same administrative group.

 

If each server is in its own administrative group then a separate connector must be installed for each server with its own remote bridgehead connector to the other server so that each can route mail to each other if needed.

 

- Firm.

 

 

We recently added a new Exchange Server (2003) to our Exchange 2003 organization.  Our Internet Mail Connector is still on our original mail server and we added the new server as a bridgehead server to this Internet Mail Connector.  The users that have mailboxes hosted on the new Exchange server can send e-mail outbound to the internet without trouble with the exception of two domains so far.  They are aol.com and Comcast.net. 

 

It appears from headers that I have looked at that the accounts being hosted on the new e-mail server are going directly out to the internet from the new box with SMTP and not going through the Internet Mail Connector on our original mail server.  I had thought that all internet bound (outbound) e-mail would route through the IMC on the original mail server, but I was incorrect. 

 

For those mailboxes that are still on the original Exchange server, e-mailing aol.com and Comcast.net isn’t an issue.

Any thoughts or advice?

Thanks,

 

Javier Ornelas

MSU Health Information Technology

Network Services/Support

A118K Clinical Center

East Lansing, MI 48824

(517) 355-6531

(517) 432-4774 fax