Sending mail from exchange 2k7 in existing 2k3 enviroment

Upgrading a current 2k3 installation to 2k7. I successfully created a test account in 2k3 and transfered the mailbox successfully to the 2k7 box.  However, i tried to just send a test message from that account and i don't recieve it..  Isn't 2k7 and 2k3 supposed to be able to cooexist while i slowly bring the 2k3 mailstore over ?
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jasonmichelAsked:
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hodgeyohnCommented:
are they part of the same org / site /
are they in the same routing group?
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tntmaxCommented:
Did you create send/receive connectors for the 2007 box? Do they show up in EMC? It should be able to co-exist and work at the same time.

http://msexchangeteam.com/archive/2006/10/27/429522.aspx
http://technet.microsoft.com/en-us/library/bb124008.aspx
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jasonmichelAuthor Commented:
they are all in the "First Organization"
the 2k7 is in the "Exchange Administrative Group (FYDIBOHF23SPDLT)"
and the 2k3 is in the First administrative Group
if i go into the routing groups under each i see the connector to the other
but in members i only see the server for that admin group
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tntmaxCommented:
what is the smtp address for the routing groups? are they intersite?
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jasonmichelAuthor Commented:
i am attaching a screenshot
exchangess.jpg
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jasonmichelAuthor Commented:
the smtp virtual server for the routing groups are the server for each admin group
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jasonmichelAuthor Commented:
do i need to create a send connector on the 2k7 box to be able to send out to the 2k3?
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jasonmichelAuthor Commented:
or would i be best served to just transfer all the mailboxes after COB and point the NAT statement to the new box and be done with
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hodgeyohnCommented:
i would be carefull jumping into the new server head first.
you should not need any kind of connector.  Both servers are in the same routing group.
they should be sending mail by default.  i would suggest we find out why they are not before anything else.
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jasonmichelAuthor Commented:
that would be my preference also..how do i start?
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hodgeyohnCommented:
first i would simplify the environment.
move both servers to the same admin group
i am pretty sure they are already in the same routing group, but i would make sure.
make certain that both servers can resolve each other, and both can ping the other.
then i would turn up the loggin on the mta to try to get some information on what is failing.
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jasonmichelAuthor Commented:
did you see my screenshot...they both aren't in the same routing group or admin group..but it was the default install. i didn't change anything and i created the routing connector during the install..the servers see each other in the routing connector but as far as being members.  They only have themselves in the members directory of their routing group?
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jasonmichelAuthor Commented:
ok..this is driving me nucking futs..I've gone step by step the way microsoft said in their whitepaper and i still can't send mail out from the mailbox that sits on the 2k7 server.  one thing that seems odd to me..is under the first routing group (2k3) the routing group connector says   2k3server-2k7server..so it created that fine..but if i go into it, it only has the 2k3server as being allowed to send mail through and as the default smtp virtual server..same thing with the exchange routing group(2k7)  what am i missing here
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