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Route Internet Mail from Exchange 2010 through Exchange 2003

During the transition between Exchange Servers, I'd like to route all internet mail from the new 2010 Server through the existing 2003 Exchange Server.

Routing is working correctly for internal mail and external mail EXCEPT for outbound external (internet) mail from 2010.  That doesn't know how to find the internet since I haven't created a SEND connector.

Not sure what the correct options were to create a SEND connector or rule that would route outbound external SMTP mail through 2003.

Thanks!
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NEMC
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NEMC
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Minoru7Commented:
If  you have a coexistence environment, and the routing connector between 2003 and 2010 is still there, and 2003 still has its Send connector, and since you said that you haven't created a 2010 Send connector, then mail should be routing out through the routing connector to Exchange 2003 to send.  Once you create a Send connector in 2010, and remove the Send connector in 2003, then the flow will go in the other direction.  Does this make sense?
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NEMCAuthor Commented:
All of your assertions are accurate, except that internet mail is not routing outbound from 2010 to 2003.  Inbound internet EMail hits the 2003 server and is correctly routed either to local server recipients or over to 2010 local server recipients.  Internal messages work in both directions.

Internet EMail sent from 2010 sits in the Unreachable Domain Queue and doesn't route.  Do I need to add SMTP address space to the Connector?

Thanks!
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Simon Butler (Sembee)ConsultantCommented:
Do you have an SMTP Connector on Exchange 2003? If not then Exchange 2010 will not use Exchange 2003 at all. You need to ensure that the SMTP connector is set to entire org - the Exchange 2010 server will see it as a Send Connector it cannot modify.
Any Send Connector created on Exchange 2010 needs to be deleted and then Transport Service restarted.

Simon.
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NEMCAuthor Commented:
Your solution could not have been more accurate.

Thanks!
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