I have been having this issue since moving my exchange to a new server. I have to reboot the server to get one of the processes under a certain amount. I dont remember what process it was but it was an exchange process. After a reboot I am fine for a week then again the issue happens. It is a HP G7 with 4 GB running server 2003 with sp2 and exchange 2003.

Exchange 2003 doesn't like that amount of RAM. Take out 2gb so that it is at 2gb and you will probably find it is happier. The other cause can be AV or antispam software, which doesn't release the memory correctly. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources

Hi, As Simon mentioned, you can temporarily turn off antivirus program or firewall to check the result. If the issue persists, please check Event Log and verify whether there is any relevant error message. If so, please post it here for research. Thanks. NovakPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Are you sure it will work just fine the way you recommend it Novak Wu?

Hi Ronster_1, I have not heard from you for a while. How is thing going on? If there is any error message or event log, please post it here for research. Regards, NovakPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.