Our change server running the informatoin store stopped processing emails. Some users could send email externally but no emali was being received from exterla or internal resources. I had a look on the exchange server and found thjiis error in the event biewer:
The database engine has consumed 99% of the "b-trees" resource (87048 used out of a maximum of 87696) for the database. Using microsoft recommendations, we tried to restart the information store, but it hanged, after which were booted the server.
Everything seems fine now, although we have a few errors in the event log. Could anyone shed some light on what this error means and perhaps where to start with the troubleshooting to identify the root cause.