emails not going from exchange 2010 to Exchange 2007

I just installed an Exchange 2010 mbx server and a 2010 hub/cas server in an Exchange 2007 enviromnent.  I moved a test mailbox over to the 2010 mbx server and it can receive email but it can't send to mailboxes on the Exchange 2007 server.  they just sit in the 2010 queue.  and there are inbound messages piling up in the Exchange 2010 queue.  not sure where to start with this one.  hidden connectors should be installed by default.
This_is_a_very_good_usernameAsked:
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This_is_a_very_good_usernameConnect With a Mentor Author Commented:
i added a recieve connector on the 2007 server with exchange authentication to fix.
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AustinComputerLabsCommented:
Did you create a send connector with an address space of * ?
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This_is_a_very_good_usernameAuthor Commented:
I thought send connectors for within the exchange domain were installed by default.
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AustinComputerLabsCommented:
I would check to make sure. Under organization configuration - hub transport - send connectors.
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This_is_a_very_good_usernameAuthor Commented:
but the default ones for within the exchage environment are hidden.
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AustinComputerLabsCommented:
When you create a new send connector one of the choices is for "internal mail".
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AkhaterCommented:
there is no connector to create for internal emails you are totally riight


first thing to do is go to your queues and check the last error on the email  is it an authentication issue ?

on the receive connector in 2007 do you have exchange server checked in permission tabs ? what about authentication ?
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AkhaterCommented:
This is not true the internal connector is created

Why dont you follow my suggestions and give back results?
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This_is_a_very_good_usernameAuthor Commented:
I believe since 2007 exchange was already in the environment it did not have the internal exchange connectors as it was the only exchange server in environment.
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