I just build a new exchange 2010 server and moved few test mailboxes from exchange 2007. I am performing testing before I start moving other mailboxes. The outlook client works fine however I am having trouble accessing the user's mailbox on exchange 2007 using OWA. The OWA is pointing to exchange 2010. I have no problem opening up the test mailboxes which are on exchange 2010. I am unable to open the mailboxes sitting on exchange 2007 using exchange 2010 OWA. I am getting following message upon logon.
>>> A server configuration change is temporarily preventing access to your account.
Please close all Web browser windows and try again in a few minutes. If the
problem continues, contact your helpdesk. <<<
Is there any work around?
Thank you.