Limit Exchange 2010 memory use

ADSIedit.msc Select known naming context and pick Configuration Configuration-Services-MS Exchange-ORG NAME-Admin groups-ADMIN GROUP-Servers-SERVERNAME-Info Store Right click the info store and choose properties and scroll down to find msExchESEParamCacheSizeMax and msExchESEParamCacheSizeMin 1GB is 32768, multiply that by the number of GB you want for min and max. Example 4GB min 32768 8GB max 262144 This is different than exchange 2007 1gb is 131072