Since this past friday we have incurred major slow downs on our network. Then, emails began getting bounced back, and it turns out we are listed on a couple blacklists for barracuda and another. Today, I started scanning to see if computers were infected. A couple computers had torjans listed, one fake antivirus, and one "idid". Both were cleaned with supersntispyware, but the problem is still occuring and I can seem to track it down. The main problem is that internet has slowed to a crawls, originally just on our wireless, but now on the wired network as well. We have a SBS 2003 server, Cisco 871W, Exchange 2003, and Windows XP Pro workstations. I am thinking we are apart of a botnet or spam email network of some sort, and I am not sure where to go next. I would appreciate any help with this matter. Thank you!