XCON: Memory Leak in Microsoft Exchange Message Transfer Agent

• Microsoft Exchange Server, version 5.0

SYMPTOMS

When a Microsoft Exchange Server is left running for a long period of time, it might run out of virtual memory due to a memory leak in the Microsoft Exchange message transfer agent (MTA). This can be observed using the Windows NT Performance Monitor, by checking the private byte counter of the Store process. If you see a steady increase over a few days, you are seeing this problem. Even though you are seeing a leak from Store, it is actually in the MTA.

CAUSE

The MTA is not freeing allocated memory properly. The store is showing the problem because it is calling a function exported from the MTA.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server, version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Keywords : kbbug5.00 kbfix5.00.sp2 XCON
Version : 5.0
Platform : winnt
Issue type : kbbug