We have an Exchange 2007 server that we are receiving notifications in the event log that "There is an online maintenance overlap" for our mailbox database. Checking the maintenance schedule via the management console GUI on this database shows the correct schedule in which we want online maintenance to run. Checking the maintenance schedule via the management shell shows that there are indeed multiple schedules for this database. After much searching online I can't seem to find how I can remove a maintenance schedule. Any help with a shell command or other means to remove the maintenance schedule would be appreciated. See image for example of multiple schedules we are seeing.