Ok I have a puzzle which I have been working on but I need some serious help. Using Exchange 2003 SP2 on Windows 2003 Server SP1 with Outlook 2003 An MD sent an email to 1 recipient testerday at 17:14 which I am told was then delivered to multiple recipients. I have used the message traking centre and located the email concerned which shows at the top being sent to 1 recipient but when you look at the events it has been delivered to multiple recipients! If I then search for the message again by using one of the recipients I can look at the message again in the top it states from <> which is strange and then in the To field lots of recipients. If I look at the events below it states delivered to the correct original recipient but further down it then states delivered to mulitple??!! I am at a loss I ahve checked rules etc but found nothing there. Does anyone have any suggestions? Is this a bug? I have never seen this happen before but as you can imagine it is causing conern. Thank you in advance.... Si