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Exchange 2003 to 2010 Migration
We are attempting to transition from exchange 2003 to exchange 2010 and cannot get mail to flow internally between them. Sending externally works fine. I have created an internal routing group connector, but mail is still stuck in the queue on both ends. On a side note, I also cannot query public folders between the servers.
npinfotech
Might be an authentication issue: http://geekswithblogs.net/cajunmcse/archive/2010/12/22/another-exchange-2003-to-exchange-2010-mail-flow-issue.aspx
ASKER
After running the mail flow troubleshooter I am getting this error:
The 'Remote delivery' queue ("servername"\6) on server "server name" is in retry status. Number of message(s) in the queue: 10. Last error information: 451 4.4.0 DNS query failed. The error was: SMTPSEND.DNS.NonExistentDo
The 'Remote delivery' queue ("servername"\6) on server "server name" is in retry status. Number of message(s) in the queue: 10. Last error information: 451 4.4.0 DNS query failed. The error was: SMTPSEND.DNS.NonExistentDo
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I still cannot send internally from exchange 2003 to exchange 2010. Any suggestions?
From the previous link:
I ran into this issue yesterday...mail flow from 2003 --> 2010 not working. Turns out that if you are using a smarthost you need to remove it from the smtp virtual server in 2003 and create an smtp connector in the First Routing Group that defines the smarthost instead. Otherwise Exchange gets "confused" and doesn't know how to route the mail to mailboxes that reside on the 2010 server. Just wanted to throw that out there for anyone else that my run into this issue.
I ran into this issue yesterday...mail flow from 2003 --> 2010 not working. Turns out that if you are using a smarthost you need to remove it from the smtp virtual server in 2003 and create an smtp connector in the First Routing Group that defines the smarthost instead. Otherwise Exchange gets "confused" and doesn't know how to route the mail to mailboxes that reside on the 2010 server. Just wanted to throw that out there for anyone else that my run into this issue.
Please create a bidirectional send connector between Exchange 2003 & exchange 2010 for mail flow
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I found the solution.