We have a single Exchange 2003 server up until this weekend. We'd installed a new Exchange 2010 server with co-existance in mind. After a successful installation, we're faced with the problem that there is no mailflow from 2010 to 2003. I've created a user with a 2010 mailbox for this test. No 2003 users have been migrated to 2010.
1. Emails from 2010 user is unable to send to external recipient (stuck in queue).
2. Emails from 2010 user is unable to send to 2003 reicipient (stuck in queue).
3. Emails from 2003 users to 2010 user successful.
4. Emails from external sender to 2010 user successful.
I have removed and recreated the Routing Group Connector according to Microsoft and the results are the same. It's bi-directional for the RGC.
We have a BES and I have checked these instructions and applied them and results are still the same.
Can someone shed some light?
- Edited by czhmious Tuesday, February 14, 2012 11:59 PM
What error is the queue showing? Have you recreated the routing group connector? How is it configured? Run Get-RoutingGroupConnector | FL and post the results here, please.
Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."
- Edited by Ed CrowleyMVP Wednesday, February 15, 2012 3:31 AM
The queue viewer shows Next Hope Domain as cn-first routing group, cn=routinggroups,.......
Delivery type: SmtpRelayToTiRg
Message Count: 5
Last Error: 451 4.4.0 DNS query failed. The error was: SMTPSEND.DNS.NonExistentDomain; nonexistent domain
Please Refer these Links and update us ,
Verify this settings as well
Satheshwaran Manoharan | Exchange 2003/2007/2010 | Blog:http://www.careexchange.in | Please mark it as an answer if it really helps you
- Edited by Satheshwaran Manoharan Wednesday, February 15, 2012 5:21 PM
I'm also currious how your routing group connector looks like, please post the result here
And here's one more additional link you can read regarding the upgrade of Transport from 2003 to 2010
Make sure that it's open between the servers (firewall openings) and that the connectors is working
Check smtp logs and queue logs and post the errors in here
DNS is fine, create a send connector on Exchange 2010 or an SMTP connector on Exchange 2003 to send emails to Internet.
This issue occurs when Exchange 2003 was configured to use the SMTP virtual server to send emails to internet and then Exchange 2010 is introduced in the environment.
We should not have any smarthost configured on SMTP VS on exchange 2003, if it is using any then put it on SMTP connector or Send connector.