The Exchange Server 2010 disk space is filling up and I noticed almost 70GB worth of log files in C:\Program Files\Microsoft\Exchange Server\V14\Mailbox\Mailbox Database. The database file itself is only 75GB and it doesn't seem that the log files should be the same size as the database. Is the truncation not working properly? What do I need to do to truncate these logs? I assume I can't just delete them by hand?