There is an knowledge base article (Q262097) which details how it can be done for Exchange 5.5. It talks about an Imsext.dll located at Exchsrvr\Connect\Msexcimc\Bin and involves creating reg keys for the strings to be appended. But I can not find this dll for Exchange 2000. So how do I do this in exchange 2000? I did however find other third party tools. Policy patrol is one http://www.policypatrol.com/QuickStart.htm But I am looking for one that Integrates into the MMC of exch server.