Have a LAN consisting of an SBS 2011 standard server and some windows 7 pro domain joined work stations.
They are using Outlook 2007. The Outlook 2007 users all have a pop3 email account ( through go-daddy) in addition to the exchange account. The users mainly use the pop3 account to send email, they hardly use the exchange account.
Our IP address keeps getting blacklisted recently. One of the blacklists - CBL keeps saying there is a spamming bot in the network. I've ran AV, Malwarebytes scans on the work stations - nothing found. I've also ran Norton Power Eraser on the work stations as recommended by the CBL blacklist site - nothing found.
Norton Power Eraser won't work on SBS 2011.
Is there another tool or recommendation to check the SBS 2011 server for bots?