The value for the '{4}' registry entry is set to {9} on server {2}. This may cause excessive memory usage by MAPI clients ...

The value for the '{4}' registry entry is set to {9} on server {2}. This may cause excessive memory usage by MAPI clients on the server. You can configure the 'Maximum Allowed Sessions Per User' registry entry instead. Please visit http://support.microsoft.com/kb/842022 for more information.