Exchange 2003 to 2010 migration

Question

Dear ,

I have co-existence environment where their is exchange 2003 and exchange 2010 together.

My exchange 2003 mailbox user are not able to send emails to 2010 mailbox user.

I tried to recreate routing group connector but still it dint work

From 2010 to 2003 mail flow is fine.

pls give expert answer

Answer 1

Hi Huzefa,
Please check my comments in this thread
https://social.technet.microsoft.com/Forums/exchange/en-US/105ae2e4-4170-4eb2-9b5a-7202792cec99/no-mailflow-from-internet-and-intranet-to-exchange-2010?forum=exchange2010

In short please try creating a bidirectional routing group and restart the transport services and check.
http://technet.microsoft.com/en-us/library/aa997292(v=exchg.141).aspx

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Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Answer 2

i really appreciate your answer but i already tried above.

My issue is very simple

exchange 2003 to outside............works

exchange 2010 to outside ...........works

exchange 2010 to 2003 ...............works

exchange 2003 to 2010................is not working

Answer 3

Did you try after restarting the both the servers? If not please try that as well
Can you please post the result of command

Get-RoutingGroupConnector

Can you see the emails stuck in the queue in Exchange 2003?
If not can you enable logs on default receive connector and check logs in exchnage2010?

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Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Answer 4

No i dint restarted whole servers as its production.

i see email in queue........

and below queue in see connection refused.

Answer 5

The only doubt i have is i use exchange 2003 to send emails to  internet using smarthost.

in exchange 2010 and 2003 co-existence environment can i use 2003 to send email to internet?

Answer 6

please any one can assist on above issue

Answer 7

Can you send a test email from Exchange2003 to Exchange2010 and post the error?
http://www.wikihow.com/Send-Email-Using-Telnet

I suggest you please restart the exchange server and try again if you created the bidirectional RG-Connector.

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Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Answer 8

which exchange server shall i restart?

Answer 9

Can you please post the result of command?

Get-RoutingGroupConnector

Restart Exchange2010.

If the problem persists after restart please remove the Routing groups connectors and create a new bidirectional Routing Group connector and check. Or delete your old Routing group connector would be enough and restart exchange transport service

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Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Answer 10

ok give me 5 mins pls.......

thanks for your support

Answer 11

i restarted its same.

Below is get-routinggroupconnector output

Name                      SourceRoutingGroup                             TargetRoutingGroup
----                      ------------------                             ------------------
AGIKUWEX-AGIEXC           Exchange Routing Group (DWBGZMFD01QNBJR)       First Routing Group
AGIKUWEX-AGIEXC           First Routing Group                            Exchange Routing Group (DWBGZMFD01QNBJR)

Answer 12

Did you try what I mentioned in my previous posts?. If not please delete both and create a new bidirectional RGconnetor.

http://technet.microsoft.com/en-us/library/aa997292(v=exchg.141).aspx

New-RoutingGroupConnector -Name "NameOfRG" -SourceTransportServers "Ex2010.contoso.com" -TargetTransportServers "Ex2003.contoso.com" -Cost 10 -Bidirectional $true -PublicFolderReferralsEnabled $true

FYI you are maintaining a product that has left extended support.
http://blogs.technet.com/b/rmilne/archive/2013/10/08/save-the-date-end-of-exchange-2003-support-t-minus-6-months.aspx

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Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Answer 13

Dear MAS,

Issue resolved after doing one strange change.

on my 2003 smtp default virtual server ,their was smart host which i removed.

then i configured a seperate connector for internet then everything is okay.

The issue is if 2003 default smtp server have smart host configured it will break communication between 2003 to 2010.

But your resolution was also commendable.So i will mark as answer ed