Event ID - 12801

Event Id12801
SourceMSExchangeIS Public Store
DescriptionMessage processing failed because there is not enough available disk space (<value>).
Event InformationCAUSE:
This event can be caused for multiple reasons. Review the following checklist to ensure that it is not an issue with the store:
1. How much physical disk space is on the drives that house the Exchange store databases?
2. Is there enough disk space in the temp directory?
3. What is the pagefile setting?

Delete unnecessary files from your hard drive, and re-try the operation.
Reference LinksMicrosoft product: Exchange Version: 6.5.6940.0 Event Source: MSExchangeIS Public Store Event ID: 12801

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