We are attempting to move from a Windows 2008 domain to a new Windows 2012R2 domain (2008R2 forest level). Exchnage 2010 SP3 is in the 2008 domain and Exchange 2013 CU5 is in the 2012 domain.There is only one accepted email domain and it is an internet routable address (eg. com.au) whereas the AD domains are both .local
So we are trying to move mailboxes from an Exchange 2010 org in abc.local domain with amydomain.net.au email address to an Exchange 2013 org in xyz.local domain with a mydomain.net.au email address. The users only have one accepted domainmydomain.net.au, they do not have an abc.local email suffix. We are NOT moving user accounts, this is similar to moving to a hosted Exchange offering.
The problem is with Outlook autodiscover when mailboxes are migrated from Exchange 2010 to Exchange 2013.
This is what has been done:
- Setup two way trust
- Configure SSL certificates and get them onto the relevent Exchange servers
- Configure the SCPs for Autodiscover in both domains
- Configured and tested all of the DNS
- Changed the accepted domain to an internally routed domain in Exchange 2010 and configured the same in Exchange 2013
- Configured Send and Recieve connectors in each Exchange org
- Used ./preparemoverequest to create new objects in 2012 domain
- Moved mailboxes from Exchange 2010 to Exchange 2013
- Accessed moved mailboxes with OWA successfully
Email flows between the two Exchange orgs correctly, out to the internet correctly, and in from the internet correctly. That is, if a user is in xyz.local, mail will come through the smarthost to the Exchange 2010 org, no local mailbox is found so it is sent to the Exchange 2013 org and delivered.
Outlook 2010 SP3 does not reconfigure with autodiscover. If the mailbox is moved while the user is looged on, they get a warning to restart Outlook but it doesn't connect. If the mailbox is moved when the user is not logged on, Outlook doesn't reconnect. Outlook cannot be manually configured to used the linked mailbox in the other domain.
I've read heaps of technet articles, blogs and the Exchange 2013 technet pages on Autodiscover and migration but to no avail. It is a small simple environment, all of the servers are on the same subnet so firewalls are not an issue!
This articel http://msexchangeguru.com/2013/11/03/e2013crossforestmigration/ has been a big help but I need autodiscover after the mailbox is moved.
Thanks