Exchange databases need maintenance. This maintenance defragments the databases, reindexes the databases and performs other tasks necessary for long-term sustainability of the databases. To configure maintenance, open the Exchange Management Console and then under Organization Configuration select Mailbox. At the Database Management tab, double-click on the database to schedule maintenance for and click on the Maintenance tab. Here, check the box for Enable background maintenance and then select one of the schedules for which Exchange maintenance occurs. This schedules a nightly database maintenance window where Exchange Server can perform the necessary operations on a given database. Alternatively, if you have a lot of databases or need to batch change these…