To view the integrity of the database store before removing the log files using the Eseutil /mh command:
https://technet.microsoft.com/en-us/library/bb125171(v=exchg.80).aspx?f=255&MSPPError=-2147217396Mailbox database integrity check:
http://www.msexchange.org/articles-tutorials/exchange-server-2003/tools/Exchange-ISINTEG-ESEUTIL.html