Mailwall - Removes all types of e-mail threats - Intercepts all e-mail messages on your network, disassembles them and looks for undesired/illicit content and threats in your e-mail: SPAM exploits, macro viruses and malicious HTML code. All policies are rules based - you can automatically filter, delete or quarantine suspicious messages. Works with all mail servers and does not require changes in setup for your existing e-mail users.