Your IS stops during backups? Can you describe fails to recover? You mean during backup process or it is currently down? What backup software are you using? Anything else in the logs besides that? James Chong Sr. Systems Engineer InPhonic, Inc. 10805 Parkridge Blvd. Reston, VA 20191 O (703) 657-4612 C (703) 863-1483 ________________________________ From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Dave stevens Sent: Tuesday, June 26, 2007 11:16 AM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Exchange 2003 Sp2 Error 9175 and 1005 Hi Guys, We been having this error for so,etime now, and it is driving me crazy. Not quite sure what it is, but we seem to get this during our full backups, The problem is that the IS falls over and fails to recover. I am now thinking of going down the route of a total exchange rebuild cos this is getting pretty critical, and I do not seem to be getting thr right pointers to the problem. MS resolution is very vague and unhelpful. Maybe someone can advice on the error below. Event Type: Error Event Source: MSExchangeSA Event Category: MAPI Session Event ID: 9175 Date: 26/06/2007 Time: 07:45:32 User: N/A Computer: EXCH003 Description: 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 For more information, click http://www.microsoft.com/contentredirect.asp. Thanks Dave ________________________________ Looking for earth-friendly autos? Browse Top Cars by "Green Rating" <http://autos.yahoo.com/green_center/;_ylc=X3oDMTE4MGw4Z2hlBF9TAzk3MTA3M Dc2BHNlYwNtYWlsdGFncwRzbGsDZ3JlZW5jZW50ZXI-> at Yahoo! Autos' Green Center.