Referral Interface cannot contact any Global Catalog that supports the NSPI Service. Clients making RFR requests will fail to connect until a Global Catalog becomes available again. After a Domain Controller is promoted to a Global Catalog, it must be rebooted to support MAPI Clients.

The MAPI call 'OpenMsgStore' failed with the following error:
The attempt to log on to the Microsoft Exchange Server computer has failed.
The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0512-00000000

OALGen will skip user entry '@ I-Tek GM-TIS Prod TivTalk' in address list '\Global Address List' because the SMTP address '' is invalid. - Default Offline Address List For more information, click http://www.microsoft.com/contentredirect.asp.