My company has a server with +400 different domains at IP 91.215.156.X, same problem here. I got a complaint from a customer that lost a sale because of incorrect identification of our IP as malware source, we also have problems explaining the customer this is a false positive and may affect our company reputation, luckily i found this thread, we are sending him this. Of course we are recommending customer to uninstall malwarebytes and look for other malware protection because malwarebytes blacklists IP ranges instead of domains and is unable to provide correct and accurate identification of malware sites. How reliable can malwarebytes be if a whole network is blacklisted because of 1 single site? only our IP has 400 domains, sorry but i desagree your blacklisting method, if one site has been infected by malware there is no reason to blacklist the whole server, blacklist only the infected site. Also i would appreciate having a way to check the original complaint for our IP to suspend service, contact customer, etc, at this time we didn't receive a complaint for our IP