I seem to get these database errors every week or so. Can anyone point me in a direction to solve this? This one came after a sudden power outage.

Database errors found.
/opt/zimbra/mysql/bin/mysqlcheck --defaults-file=/opt/zimbra/conf/my.cnf -S /opt/zimbra/db/mysql.sock -A -C -s -u root --password=REMOVED
mboxgroup2.mail_item
error : Corrupt