I have Exchange 2003, SP1. The Event Log starts showing recurring messages of:
Mapi session "852c273a-01a9-4907-bab8-3f2a2efe00c8" exceeded the maximum of 32 objects of type "Session"
And at some point, users are no longer able to connect to Exchange via Outlook (version 2003, running in cached mode). Restarting the ExchangeIS service or rebooting the server seems to fix this problem for a while but problem reappears after a few days. I have looked at Microsoft KB830829 and KB830836. I created a "Maximum Allowed Sessions Per User" entry under "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem" and increased the value from 32 (default) to 64 and then 128 but the problem will not go away.
Any advise would be greatly appreciated.