Exchange 2010 and Exchange 2003 Coexisting

cam-e
cam-e used Ask the Experts™
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I have setup a new Exchange 2010 install in a remote office and have Exchange 2003 SBS running in another office.

I have moved a few mailboxes to Exchange 2010 and these users are able to send mail fine but currently can not receive. Is it possible to leave all the mail coming into the 2003 box and have it then delivered to the 2010 Box for the mailboxes that reside on that server?

THanks,
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Commented:
It should be possible... you just need to include the 2010 server in the ogranization.  I think it just needs to be in the routing groups of the server?

Just add another routing group connector to the 2010 server.

If you are thinking of migrating over to the 2010 server, it could be best to move all of the mail transport functions over to it.... So it manages sending and recieving emails.



Author

Commented:
Ideally i wan t to move everything but unfortunately the offices are in different countries and there is alot of data to move so i am going to do it over a few weeks.

So, add the connector from the 2003 server to the 2010 server?

Any idea where i can get more detailed instructions...? Exchange isnt my forte.

Commented:
hmmmmm If you go into your exchange system manager...

You should have in the Administrative groups folder a few folders..

Exchange 2010 group
Exchange 2003 group
+ Others possibly

In each of these folders, there is a routing groups folder...

Go in here, then into the connector folder...

Right click somewhere and add a Routing Group Connector.
make one for each server to connect to the other serrver.
Its pretty straight forward, the front page is the local server settings.... and the Remote Bridgehead tab, put the other server in there...

This will establish a connection between the both...




Commented:
if the routing groups didn't help, check that their is  recieve connector set on the exchange 2010 box that allows you to recieve email from the 2003 box.

Author

Commented:
I re-created a bidrectional RoutingGroup connector using Powershell on the E2010 Box.

Now, mailboxes on the E2010 can send mail both internally and externally but they can still not receive mail from outside.

Commented:
definately the recieve connector is the issue then. Have a look at it.

create a new Internet recieve connector
Exchange Management console --> Server config --> Hub --> Receive connectors.
make sure you allow anon for this one.

Author

Commented:
There is two receive connectors there... A client and a default. Have allowed anonymous permissions on both now and there has been no change.

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Commented:
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Commented:
sorry mate, I'll find another guide.

Commented:
can they recieve mail from users on the 2003 box?

Author

Commented:
No, mail boxes on the 2010 can only receive mail from other mailboxes on 2010 and nothing from 2003 or externally.

Author

Commented:
I restarted the SMTP and routing Service on the 2003 box and everything has started working.

thanks for all the tips and pointers.

Commented:
Are the connectors I suggested earlier setup on both the 2003 box and then 2010 box?

it seems they might think they are parts of separate organizations?

Commented:
ahhhh nice

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