Reflexion effectively blocks spam without fallible filters - Challenge- and-response approach gives users ample control over who can and can't contact them.(RTC (Reflexion Total Control) 3.0)

Most anti-spam engines use a variety of filtering engines to block messages based on originating IP address of the sender, the domain, words in the message, or a wide variety of other indicators. There are two inherent problems with this approach, however: Spammers are able to change their approaches in order to bypass filters, and at times, filters can block legitimate mail. I regularly receive bounced messages, for instance, because some black-hole lists such as sorbs.net have decided I shouldn't operate an e-mail server on a dynamic DNS address.

RTC (Reflexion Total Control) 3.0 takes a different approach to blocking spam. Rather than filtering messages, it gives each of your users a different alias e-mail address for everyone they correspond with. This is initiated with a …