I am trying to stop Spam coming into a particular recipient. The customer doesn't want to receive anything from any hotmail account. Under ADUC I can specify a "Accept Messages from everyone Except" and enter a recipient. However, this needs to be someone in the GAL. What I need to do is stop anything from *@hotmail.com from being received by the customer. I have looked at unauthOrig: which is the schema attribute for this but the format needs to be specified as a Distinguished Name. Does anyone have any bright ideas that I may try? Mark Shevill IMG Messaging Deputy Team Leader Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 935 7152 Email: Mark.M.Shevill@xxxxxxxxxxxx Internet: http://www.shell.com