I have migrated exchange 2007 to exchange 2010 and moved all mailboxes and it was working fine for around one month. Now when i try to add a new profile through outlook 2003 or 2007 or 2010 i am getting a message "Action could not be completed. connection to microsof exchange is unavailable . outllok must be online or connected to complete this action"
I moved few mail boxes from 2010 to 2007 and it is working fine. Again I moved from exch 2007 to exch 2010 and again back to this issue. Is this related to global address list or DNS. Please advice urgently . We have 460 mailboxes and today I need to clear this .Please advice
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