I have been getting messages from spamcop and our ISP that we our exchange server is sending spam. Does anyone have an idea what I can do to stop that? I have been patching the server and I have AV installed. What else can I do? Rafi

Are you certain the SPAM is getting sent through your mail server? You may want to review your SMTP logs to confirm. If not another possibility would be other infected machine(s) on your network (assuming traffic appears to come from the same address). Good luck, Erik