exchange server 2003 mdbdata folder keeps filling quickly with log files which causes me to run out of hard drive space and shuts down the information store.

How often you perform backup? If you perform backup every day, it should clear the log files. If you are backing up Exchange every night then look at the following article: http://technet.microsoft.com/en-us/library/aa996191(EXCHG.65).aspx Also, read more about circular logging. It is not really recommended. http://support.microsoft.com/kb/147524 http://support.microsoft.com/kb/821829 Santhosh Sivarajan | MCTS, MCSE (W2K3/W2K/NT4), MCSA (W2K3/W2K/MSG), CCNA, Network+ Houston, TX http://blogs.sivarajan.com/ http://publications.sivarajan.com/ This posting is provided "AS IS" with no warranties, and confers no rights.