The Event Ids in Microsoft Exchange Server form most important parts of system diagnosis. These cryptic error messages allow the user to diagnose the logging problems. While there are various reasons for the occurrence of these event id, the most important is the corruption in the 'Information Store'. For easy resolution of any event id, the user can restore the database from an updated backup. However in case of absence of an updated backup, the user requires a powerful Exchange Server Repair software to repair the database.

As a practical case, your server locks up for no reason and when you reboot, the MS Exchange 2003 does not start. On viewing the event log, you view a series of event ids:

"Event Type: Error

Event Source: MSExchangeIS

Event Category: General

Event ID: 9518

Date: 6/7/2005

Time: 5:56:43 PM

User: N/A

Computer: CRC2K3

Description:

Error Log file is corrupt starting Storage Group

/DC=local/DC=cr/CN=Configuration/CN=Services/CN=Microsoft

Exchange/CN=CityRealtyMail/CN=Administrative Groups/CN=First Administrative

Group/CN=Servers/CN=CRC2K3/CN=InformationStore/CN=First Storage Group on the

Microsoft Exchange Information Store.

Storage Group - Initialization of Jet failed.

Event Type: Error

Event Source: MSExchangeSA

Event Category: MAPI Session

Event ID: 9175

Date: 6/7/2005

Time: 6:07:09 PM

User: N/A

Computer: CRC2K3

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

Event Type: Error

Event Source: ESE

Event Category: Logging/Recovery

Event ID: 454

Date: 6/7/2005

Time: 5:56:43 PM

User: N/A

Computer: CRC2K3

Description:

Information Store (448) First Storage Group: Database recovery/restore

failed with unexpected error -501."

Next, when you try to mount the 'Mailbox' or 'Public Folder', you encounter the below error message:

"The database files in this store are corrupted"

Cause:

The cause for the occurrence of the above error message is corruption of Exchange Server database.

Resolution:

To resolve the above error message and to repair the Exchange Server database, you have to use an effective Exchange Server Repair application. Such Exchange Repair Software employ extensive scanning techniques to repair and restore corrupt Exchange Server database.

Exchange Repair is an answer to all logically corrupted Exchange Server databases. With recovery of deleted mailboxes, the MS Exchange Repair application repairs databases created in Exchange Server 5.5, 2000, 2003, and 2007. The repaired EDB file is saved in a .pst file format.