How exactly does LastSpam know which emails are legitimate?
LastSpam uses sophisticated methods that are carefully and continuously configured and tuned to avoid creating false positives (this is when good email are erroneously identified as spam and blocked. The first layer of security runs checks to make sure senders respect RFC’s and other standards, and do not send messages like Spam robots and PC zombies do. Even before analyzing the content of email traffic, LastSpam is able to distinguish which come from legitimate SMTP (email) connections. Mail is them filtered through multiple virus, file extension, file type, and content filtering checks. Finally mail passes through custom filters, in combination, which must agree (to minimize false positives) to take one of three actions: 1) Deliver the email; 2) Red flag the email and send it to the customer as potential spam (a very small % of emails are delivered this way, but this does occur when LastSpam ais not sure if the email is legitimate or not); or 3) Block the email as spam (you will be
