Hello Everyone, I am having a problem where If someone in a particular organization turns on the out of office assistant in Outlook 2003, and another person sends them a message. The sender receives two replies. No more than two but it is two distinct replies. The clients are running Outlook 2003. The Exchange server is running Exchange 2007. All of my testing has indicated that this has something to do with client configuration. I came to this conclusion because if I access the exchange server directly via webmail and turn on the Out of Office Assistant from there. It seems to work fine. If anyone can suggest some further tests that might be more conclusive I would appreciate it. Thanks for your help! Cheqtel