Our Exchange 2007 Std. server also has Share Point installed on it (I know, this will change). The server is running 64 bit 2003 Server. Last night the Share Point config DB grow to the point that the C drive had only 400MB free. We stopped receiving email. In the past if we ran low on disk space, I would clear space and Exchange would start working again. After setting the Share Point Config DB to Simple recovery mode and truncating the log file I was able to free 4GB. My problem is that we are not receiving email yet. Actually is started to receive for about 15 minutes, and then stopped. There are no Event Log errors. Any ideas?