SPAMFilter Gateway is implementation is very simple. Its use is designed for owner’s and companies running their SMTP servers, not end-users. SPAM Filter GateWay is designed to be your incoming SMTP server.

It receives all emails addressed to your domain(s). If the sender’s IP is not listed in one or multiple DNS-based block lists, if Bayesian statistical analysis of the email suggests it is not spam, and the email content passes your keyword tests, the email is then forwarded to your main SMTP server. End-users have web access to their own quarantined emails. Spam-free emails are then forwarded to your SMTP server(s) . Please look at the “how it works” details for more information on all of our additional anti spam features.

• Blacklisting of websites & domains: SpamFilter maintains an up to date list of the largest and most aggressive known spammers. This list is maintained by both SpamFilter and other anti-spam groups. This list is automatically updated on each SpamFilter Spam Firewall.
• Keyword scanning of emails: Our scanning methods include a scoring system such that emails are scored based on a number of criteria. If the score is above a threshold, then that email is flagged as spam. The SpamFilter team constantly monitors and updates these keywords based on current activity so there is virtually no lost messages.
• Checksum technology: SpamFilter monitors email traffic through the Internet and uses checksum technology to keep track of the number of times a particular message has appeared on the Internet. If a message has appeared over a certain number of times, it is categorized as known spam. Checksums of known spam messages are utilized by SpamFilter to block spam messages.
• Message authenticity checking: Several algorithms are utilized to verify the authenticity of a message. Some of these are simple checks to verify that the “from address” is authentic. Some are more complex relating to SMTP protocol.
• Blacklists and Whitelists: Domains, IP’s, and email addresses can be blocked or whitelisted (allowed through).
• Rate controls: Utilized to stop denial of service attacks as well as dictionary based spam attacks. These are integrated in SpamFilter.
• File type attachment blocking: Known malicious file types are blocked from entering your e-mail. These attachments are also scanned using the built-in Anti-Virus protection.
• Anti-Virus Protection: In addition to anti-spam protection, SpamFilter provides protection against e-mail based threats such as malicious viruses and worms, which is where 95%+ of the viruses originate. This additional measure it built-in to our service and updates on a hourly basis to ensure the latest definitions are in place.