Hi I have a problem with exchange 2000 running in a cluster, all the services looks as if they have started but in the event viewer I get this message The MAPI call 'OpenMsgStore' failed with the following error: The Microsoft Exchange Server computer is not available. Either there are network problems or the Microsoft Exchange Server computer is down for maintenance. The MAPI provider failed. Microsoft Exchange Server Information Store ID no: 8004011d-0526-00000000 Mokwena "All factual and other information within this e-mail including any attachments, relating to the official business of South African Post Office (Pty) Ltd., or of any associated company, is the property of the S.A. Post Office. It is confidential and legally protected against any unauthorised use. The South African Post Office neither owns nor endorses any information which does not relate to its official business. This would include personal mail and/or opinions by senders who may or may not be employed by the South African Post Office. The person addressed in the e-mail is the intended recipient. Please notify the sender immediately if it has unintentionally reached another recipient. Such recipient must not read, disclose or use the content in any way whatsoever. The South African Post Office cannot ensure that this e-mail is free of errors, viruses, interception or interference and will not be held liable for any personal mail and/or opinions expressed herein."