Exchange 2010 to Exchange 2007 mail routing

Hi,

I am currently in the process of testing my Exchange 2010 Server in preparation for a migration.

I issue I have is that I can send mails to users who are on the Exchange 2010 server to each other, but if I try to send mails to users on the legacy Exchange 2007 server, the messages are just stuck in a queue.

I have configured both HUB Transport server receive connectors to accept mail from each other, but still no joy.

I have tried telnet to each server and that works fine.

Can anyone shed any light on something I haven't done?

Help really appreciated.

Novatek
novatekitsolutionsAsked:
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novatekitsolutionsConnect With a Mentor Author Commented:
Hi Rancy,

Yes both servers are in the same domain and site.

But, I've figured it out, I originally configured the Default Receive Connector.  

I removed the IP's from the Default Connector and created a specific one for Exchange 2010 with the correct permission and mail is now flowing.

Thanks

Novatek
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
Are both the servers in the same domain and site ?
Did you try with Creating a RGC between Exchange 2010 and Exchange 2007 ?

- Rancy
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rbaduaCommented:
I second Rancy's advice.  You need to create the RGC in powershell.  Here is the link below.
http://technet.microsoft.com/en-us/library/aa997292.aspx
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ChrisCommented:
What permissions do you have set on the connectors
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novatekitsolutionsAuthor Commented:
Hi Irweazelwallis,

For Authentication - Exchange Server Authentication

For Permission Groups - Exchange Servers

Novatek
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Antonio VargasMicrosoft Senior Cloud ConsultantCommented:
Just FYI routing group connectors are only necessary for enabling message flow between exchange 2010 and 2003.. not 2007..
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novatekitsolutionsAuthor Commented:
Hi GreatVargas,

I didn't create a Routing Group Connector, I just created a Receive Connector on 2007 and vice versa.  This started the mail flow.
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Antonio VargasMicrosoft Senior Cloud ConsultantCommented:
Of course that is the right way to do it.
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novatekitsolutionsAuthor Commented:
I removed the IP's from the Default Connector and created a specific one for Exchange 2010 with the correct permission and mail is now flowing.
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