Yes thats also the case for the CPU. It will max out whilever there are messages remainin in the queues. This also has another impact that users complain of mails stuck in Outbox. You could try setting the "MsExchESEParamLogBuffer" attribute to 1000 in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MsExchangeIS\Parameters Public Mark Shevill IMG Messaging Deputy Team Leader Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 935 7152 Email: Mark.M.Shevill@xxxxxxxxxxxx Internet: http://www.shell.com <http://www.shell.com/> -----Original Message----- From: Roberto Hernandez [mailto:rhernandez@xxxxxxxxxxxxxxx] Sent: 20 August 2002 13:49 To: [ExchangeList] Subject: [exchangelist] High CPU usage http://www.MSExchange.org/ I have a Win2k server SP3 and E2k also on SP3 and the CPU goes up to 98 - 99%. I know it is supposed to use all memory and release when needed by desighn, but is that true for the cpu also. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: Mark.Shevill@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')