All I am opening up this as a discussion thread. I have just installed the Intelligent Message Filter from Microsoft on my e2k3 exchange server. So far it has worked quite well as it looks for patterns. I have a few questions that are popping into my head and would like your views on: 1. How does the filter perform on a large organisation under load 2. The filters are built up by adding senders to the junk senders list in Outlook and this is then sychronized with the mailbox store. However, the filters are a Global setting. So: * In a large org would this not mean that we would soon be in a position that it started to filter out messages that some people did not consider SPAM. Since I might consider a loads mail shot important and you might consider it as junk and Spam. ?? * If 2000 addresses are on the Junk senders list the performance of Outlook deteriorates. Would this impact everyone on a particulr store or is this just lo local. Your thoughts and experiences would be much appreciated on this, Mark Shevill IMG Messaging Technical Lead Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 435 8709 Fax: +44 161 933 3502 Other Tel: +44 7932 625510 Email: Mark.Shevill@xxxxxxxxx Internet: http://www.shell.com <http://www.shell.com/>