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Two Exchange 2007 servers - sending mail problem

We have an environment where there are two Exchange 2007 servers.  In/out mail flow and  all mailboxes had been moved to the database on the newer server, as the older one was being scheduled to be taken offline.  

However the new server had suffered an array failure.  We were able to get the OS back up but only the Exchange information store and system attendant services are able to start.  We are trying to put the old server back into production but any mailboxes on the new server mailbox database cannot send mail out.  Those mailboxes receive mail and can be accessed through OWA on the old server.

Is there any way i can route outbound mail through the old server for mailboxes still on the new server?  I'm thinking it can be done by changing the site cost? How can that be done?

thanks for any help
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smocohiba
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smocohiba
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apathy42Commented:
We do routing of our e-mail from one site to a server at the other site, I think this should work for you.  Make sure the cost of the other Send connectors is greater than 1, and then create a new send connector as follows:

Address space - Type: SMTP, Address: *, Cost: 1

Network - Route mail through the following smart hosts: old.Exchange.server, Authentication either None or Exchange Server Authentication, depending on what your old Exchange Server requires in its primary SMTP receive connector on port 25.

Source Server: New Exchange Server
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smocohibaAuthor Commented:
Thanks for your answer - I had already deleted all send connectors except the one on the old server.  If the user mailbox is on the old server sending works, but if it's on the new server (the damaged one) it cannot send out.  We are moving mailboxes back to the old server, but would like to enable sending for those mailboxes that haven't transferred yet.

I'll delete and recreate all send connectors and see if that helps
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apathy42Commented:
You use the above send connector in addition to the one on the old server.

You might check your authentication.  I know that one thing that we had to do was create a receive rule on the smart host (which would be your old server) with a from IP address of the other server (which would be your new server) and set it to use Exchange Authentication.
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smocohibaAuthor Commented:
apathy42 - sorry I didn't completely understand your original post the first time around.  I get what you're saying now, thanks for clarifying.

I'm now having issues with CAS services and enabling a re-keyed UCC cert on the working server.  I'll open a new question for that.  Thanks again for the help
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