|Message:||Exchange store ‘%1’: The logical size of this database (the logical size equals the physical size of the .edb file minus the logical free space) is %2 GB. This database size is approaching the size limit of %3 GB.
If the logical database size exceeds the maximum size limit, it will be dismounted on a regular basis.
This Error event indicates that the Microsoft Exchange Information Store database is approaching the maximum size limit. This error may be logged in either of the following scenarios:
To resolve this error, locate the key for the Information store in the registry. A sample registry key is: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<SERVER NAME>\Private-013e2e46-2cd7-4a8e-bfec-0e4652b94b00
Note The GUID in this key (Private-013e2e46-2cd7-4a8e-bfec-0e4652b94b00) is an example and should match the value of the objectGUID attribute on the database’s Active Directory directory service object.
Caution Incorrectly editing the registry can cause serious problems that may require you to reinstall your operating system. Problems resulting from editing the registry incorrectly may not be able to be resolved. Before editing the registry, back up any valuable data.
If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.