I had a sbs 2003 go down. The information store will not mount and in ESM shows nothing, although database still in progamfiles/exchsrvr/... I have traced the source of multiple errors to a transaction log corrupt/missing. I have attempted eseutil and got nothing but errors.
I'm sure its fixable but I am out of time.
see link of previous question :
I have backed up all pst files manually, 12 users, and want to delete the current information store. Then create a new information store and simply reconnect the users and import pst back into pc's. I'd rather not use exmerge if possible, and do I have to uninstall and reinstall exhchange server?