Cannot send or receive emails once mailbox is move from Exchange 2003 to Exchange 2007

I am a newbie trying to figure out why I cannot send emails from my newly installed MS Exchange 2007 SP2 64-Bit on Windows 2008 64-Bit SP2 member server. The server have the following roles installed on it.
Mailbox
Client Access
Hub Transport Role

Currently all mailboxes reside on the Exchange 2003 SP2 running on Windows Server 2003. Mail sent from mailboxes on this server internally or externally is working fine. It only stops working for a particular mailbox if it is moved to the Exchange 2007 server. The MTA service on the Exchange 2007 server cannot be started. Whenever I start the service, it tries and then it stops with the follwoing message:

The Microsoft Exchange Transport service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs.

Please I need your help to solve the problem.
SMulitaloAsked:
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
Do you have have your default receive connector set with anonoymous...by default this is not the case.

Server Config -->  Hub Transport -->  edit the Default Receive connector  check anonymous
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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
When you open the default recieve connector select the Permission Groups tab then check Anonymous...
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BusbarSolutions ArchitectCommented:
please make sure that you have the latest hotfixes applied to the Exchange 2007 Server.
move the troubled mailbox to 2003, Dismount the store on the Exchange 2003 server, dun a defragementation on the database using eseutil and isinteg, mount the database then move it to Exchange 2007
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SMulitaloAuthor Commented:
Hi EndureKona,

Thanks for the quick reply. I have Anonymous users selected as well as the following users:

Exchange users
Exchange servers
Legacy Exchange servers

But not Partners
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SMulitaloAuthor Commented:
Hi Busbar, I have downloaded & install all the latest hotfixes to the best of my knowledge after installation of sp2 for exchange 2007.
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BusbarSolutions ArchitectCommented:
ok now do the mailbox that causes the service to crash, run eseutil and isinteg on the Exchange 2003 database then move the mailbox back to the Exchange 2007 server
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SMulitaloAuthor Commented:
Thanks busbar: after some trial and error, the situation is now like this:

Issue:
The MTA service on the Exchange 2007 server cannot be started. Whenever I start the service, it tries and then it stops with the follwoing message:
The Microsoft Exchange Transport service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs

To fix the MTA service not starting following the instructions on this link: http://support.microsoft.com/kb/948000/en-us

After that, I uninstalled HT and reinstalled it again. This created the correct routing groups and 2 Receive Connectors.
Created an SMTP Send Connector using the following link: http://technet.microsoft.com/en-us/library/aa998662(EXCHG.80).aspx

Tested mailbox migration and it works fine.

Test email for the following scenarios:

Send email from:

e2k3 to e2k7 - works fine
e2k3 to external - works fine
external to e2k3 - works fine
e2k7 to e2k3 - DOES NOT WORK (help)
e2k7 to external - works fine
external to e2k7 - works fine

So here is where I am at and the only thing that is not working. So anyone can help out with this I will give them the maximum points as all the other stuff I figured it out from different articles available on the net.

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Rick FeeMessaging Engineer - Disaster Recovery EngineerCommented:
Run Exchange BPA....the hope is it will find security permission issue.   Follow the intructions how to resolve it.   I have run into something like this in the past and someone orginally screwed around with the exchange 2003 permissions....once resolved everything was working

That is if your routing group connector is working properly....other thought you might want to remove and recreate:


New-RoutingGroupConnector -Name “Interop Exchange 2003” -SourceTransportServers “exchange2003.localdomain.local” -TargetTransportServers “exchange2007.localdomain.local” -Cost 1 -Bidirectional $true -PublicFolderReferralsEnabled $true
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SMulitaloAuthor Commented:
Recreating the routing group connectors did not help. I have moved all the mailboxes to e2k7 since and that negated the issue with 'not been able to email from e2k7 to e2k3' as all the mailboxes have moved successfully off e2k3. The action did not fix the issue but worked around the issue to mitigate the above mentioned issue. I would still like to know the root cause but I guess in the context of urgency it is now low in priority. I therefore thank all of you who responded to my query eventhough it did not resolve any part of it but at least eliminated possible causes. I dont know if I could split the points to all that responded or I just assign it to myself?
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