Hello, I'm working on completing a 2003 to 2010 migration and am having difficulties getting the Public Folder replicas to move to the Exchange 2010 database. I suspect that this is an issue with the routing group connector. The SMTP send connector
on the 2003 server is NOT configured to use a smarthost. The 2010 server's is, but I've tried removing that and using DNS before restarting the Transport service and got the same result.
I created a routing group connector which I have since removed and recreated. It is bidirectional and allows public folder referrals. Previously, we did have two way mail flow between the 2003 and 2010 servers but not we do not. If I try
to send from a mailbox on the 2003 server to a mailbox on the 2010 server, I get an NDR generated:
A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients. Contact your administrator.
<Email.subdomain.domain.edu #5.3.5>
email.subdomain.domain.edu had a DNS A record entry which pointed to the 2003 server, which I've since changed to the 2010 server.
I've checked the IP address of the Default SMTP properties on the 2003 server and it is set to the correct IP and not "All Unassigned."
If I restart the SMTP service on the 2003 server, I see this event
Message delivery to the remote domain '_736acabfcbad314e9861a7d2242548aa_D' failed for the following reason: Unable to deliver the message because the destination address was misconfigured as a mail loop.
Each time I restart the SMTP service on the 2003 server, I see this event in the system log:
A Kerberos Error Message was received:
on logon session subdomain.domain.EDU\2003servername$
Client Time:
Server Time: 20:28:55.0000 11/30/2015 Z
Error Code: 0x34 KRB_ERR_RESPONSE_TOO_BIG
Extended Error:
Client Realm:
Client Name:
Server Realm: subdomain.domain.EDU
Server Name: krbtgt/subdomain.domain.EDU
Target Name: krbtgt/subdomain.domain.EDU@subdomain.domain.EDU
Error Text:
File: e
Line: 6c8
Error Data is in record data.
I had previously used setspn to get the connector working but I'm wondering if this problem is still related. Here is what I have when I do setspn -l for the 2003 server:
SMTPSVC/subdomain.domain.edu
SMTPSVC/Email.subdomain.domain.edu
MSSQLSvc/2003server.subdomain.domain.edu:1433
exchangeRFR/2003server.subdomain.domain.edu
exchangeRFR/2003server
exchangeMDB/2003server.subdomain.domain.edu
exchangeMDB/2003server
SMTPSVC/2003server.subdomain.domain.edu
SMTPSVC/2003server
HOST/2003server
HOST/2003server.subdomain.domain.edu
I've done a bit of googling binging but I haven't found an answer. I'm not sure how this is a mail loop.