Migration Exchange 2003 to 2010 RoutingGroup Connectors not Working

Hi there I have a big issue regarding Migration from Exchange 2003 to 2010.

Normaly you setup the routing Groups between both exchange Systems, create a
SMTP Connector on exchange 2010, delete the virtual smtp Server on exchange 2003and then all replication is going from exchange 2003 to exchange 2010.

My Problem is that the Routing Group Connectors did not seem to work. I can send and
reciefe Emails on the Exchange 2010 System, but the internal mail flow did not seem to work this is also the reason why I can not send and reciefe Emails from the Exchange 2003 System.

For now i reacreat the virtual SMTP Host again on the 2003 Server, but until this issue issent solved i can not finish the Migration.

Any Ideas?
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Simon Butler (Sembee)ConsultantCommented:
You don't do this "delete the virtual smtp Server on exchange 2003"

Recreate the RGCs.

25 points is a bit tight as well.

Pete LongTechnical ConsultantCommented:
I see this happen a lot, when you have made the repairs Simon has pointed out (above) and you are back where you were,

try executing the following commands on the Exchange 2010 server (In the Management Shell);

Get-RoutingGroupConnector | Remove-RoutingGroupConnector

New-RoutingGroupConnector -Name “Exch2003-Exch2010" -SourceTransportServers “EX-2010.petenetlive.com” -TargetTransportServers “EX-2003.petenetlive.com” -Cost 100 -Bidirectional $true

Net Stop "Microsoft Exchange Transport"

Net Start "Microsoft Exchange Transport"

Open in new window

Note: Change the server-names accordingly

Simon Butler (Sembee)ConsultantCommented:
I am unsubscribing. 25 points isn't worth it.
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PhoenixfeuerAuthor Commented:
Sorry, this is my first posting here. I  elevated to 40 Points I hope this is a propper ammount of Points.

I recreat the RG's but at the moment only the RG Connector is filling up, but no mail transfer to the Exchange 2010 System
PhoenixfeuerAuthor Commented:
I see. so lets go to 200
Pete LongTechnical ConsultantCommented:
D0 you have a smart host configured on the default SMTP Virtual server (on 2003) if so REMOVE IT!
PhoenixfeuerAuthor Commented:
Smart host on Exchange 2003 is removed.
RG Connector is Set between booth Exchange Servers.

I habe two test users tuser2010 is on exchange 2010,  tuser2003 is on Exchange Server 2003

Emails send from tuser2003 (Exchange 2003) to external email Address is working properly
Emails send from tuser2010 (Exchange 2010) to external Address is working properly

emails send from tuser2003 (Exchange 2003) to tuser2010 (Exchange 2010) will not work even the RG seems to work, because if not, the sending from exchange 2003 to any external mail account won't work
Pete LongTechnical ConsultantCommented:
>>emails send from tuser2003 (Exchange 2003) to tuser2010 (Exchange 2010) will not work even the RG seems to work, because if not, the sending from exchange 2003 to any external mail account won't work

OK So I assume emails sent foro tuser2010 to tuser2003  work OK?

So inbound mail on the 2010 form the 2003 is you rONLY problem? Have you
configured a receive connector on the 2010 box?

PhoenixfeuerAuthor Commented:
Yes, the Recive connector is set to allow Anonymous Connection, but still my 2010 Account is getting no mails :(

Is there a way to see why the email will not leave the Rouing Group Connector?
nashim khanExchange AdministratorCommented:

Have you checked the eventvwr, please let us know what event is occurring in the eventvwr. And what you are getting in message last errors.


Please see this article.


And see the below article also.


And FYR please see the migration steps in clear pics wise.

Please don't waste your time figuring out your migration problem at this point.

If your mailboxes are ok on 2003 (send/receiving in and out) just move back your users onto 2003 server remove 2010 server.

Restart the migration again.... and this time try to do a transitional migration scenario.  This will allow you to have both exchanges in co-existence until you finish moving all mailboxes to the new server.

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PhoenixfeuerAuthor Commented:
Sometimes it is better to start from Scratch.
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