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Routing all email from a specific local source domain(we have multiples) to a specific remote host

We are running Exchange Server 2007

We have multiple domains so our primary smtp addresses look something like this for each mailbox/account:

userman@domain.com, user@anotherdomain.com, someotheruser@yetanotherdomain.com

We would like to be able to send all email for a particular local domain to a remote server/smart host.

So all mail sent from *@domain.com on the local server is routed to some other server on a completely different network. I think the term is smart host?

This is not done through SMTP Send Connector as you cannot specify the local hosted source domain, only Address Space which specifies the destination.

I think what I am trying to do is called source based routing. I have been told that this was no longer possible in exchange 2007. Is there a way around this limitation?

Thanks in advance for any help!

jrgcomputing

I'm not sure what you are trying to do. However if you want to deliver mail locally and if the email address doesn't exist locally and instead of sending an email saying the recipient cannot be found forward it on to another email server,

To do the above simply change the accepted domain (EMC, Organization Configuration, Hub Transport, Accepted Domains) to External Relay and change the MX record on the DNS Server that the exchange server users.