Hi All, I am finding this error in my Event Log on my Exchange 2000 Server. It appears almost exactly at 1 minute intervals. mt_open returned error 0x15 on database First Storage Group/Mailbox Store (Server Name). I have search everywhere for documentation on this and can't find it. Has anyone encountered this? Do I have a big problem or is it a fixable one? Thanks, Kelli Ms.Kelli Mariah Irwin