I have added new exchange 2010 Servers in a new AD site. We have exchange 2007 in the same domain but different site so we are planning to migrate all to the new exchange 2010.
I run the following command from the exchange 2010 CAS to enabled the redirection for exchange 2007 mailboxes:
Set-OWAVirtualDirectory EX2010CAS3\OWA* -Exchange2003URL https://legacy.domain.org/exchange
the command run ok but testing OWA When I tried to open a mailbox in the same OWA Exchange 2010 form it complain with the error after enter the exchange 2007 mailbox account "Outlook Web App isn't available. If the problem continues, please contact your helpdesk" OWA with Mailboxes in 2010 are ok.
I have running the same command before for other similar implementation wirh exchange 2007 and exchange 2010 and it works but not sure why this time seems that nothing happen.