I know that Isinteg and Eseutil are "offline" tools to test and repair exchange. If I just want to check the database integrity, is there an online tool that will do it?If I do need to use isinteg and eseutil, is there a way to gauge how long it will take on a 3GB database? Thanks,Steve

I'm not aware of any online tools. The time it takes to perform a integrity check depends on your server hardware and the tests you perform. A 3GB database however should not take long (< 1 hour) On large databases it may sometimes be worth restoring a database in the recovery storage group and performing the tests on the restored database.