Sonic.net's anti-SPAM tools are highly effective at decreasing the amount of unwanted emails that make it to your inbox. Our anti-SPAM system is divided into a few key elements; MTA filters, SpamAssassin and Graymail. All are enabled on your Sonic.net account by default.
Our MTA filters are on the frontline of our incoming email system and block unwanted email using large, frequently updated blacklist databases of known SPAM-friendly networks and providers. These filters can be customized by using our MTA Filter tool.
Spam Assassin is an easy-to-use system that uses a set of rules to identify spam and flag it as such so that it is easily filtered. Spam Assassin evaluates incoming mail, looking for particular characteristics that are common in spam emails, and assigns points for every characteristic it finds. If a particular email earns enough points when examined by Spam Assassin, that email will be caught by Graymail and not delivered. SpamAssassin's preferences can be modified using the Spam Filtering tools.
Graymail is a tool which intercepts all mail SpamAssassin marks as SPAM before it is delivered to your inbox. All mail caught by Graymail is stored on our server for 7 days, during which time you can review them at https://members.sonic.net/email/graymail/. Graymail sends a nightly report of all messages it has intercepted to your inbox. If you see that a message has been improperly intercepted, you can use our convenient web interface to whitelist the sender and deliver the captured message to your inbox.
Please visit our SpamAssassin FAQ for additional information on SpamAssassin and Graymail.