• Blacklisting of websites & domains: SpamZone maintains an up-to-date list of the largest and most aggressive known spammers. This list is maintained by both SpamZone and other anti-spam groups. This list is automatically updated on each SpamZone 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 SpamZone team constantly monitor & update these keywords based on current activity so there is virtually no lost messages.
• Checksum technology: SpamZone 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 SpamZone 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). These lists may be maintained on a per user basis or on a corporate basis.
• Rate Controls: Utilized to stop denial of service attacks as well as dictionary based spam attacks. These are integrated in SpamZone.
• 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, SpamZone provides protection against email based threats such as malicious viruses and worms, which is where 95% of viruses originate. This additional measure is built-in to our service and updates on an hourly basis to ensure the latest definitions are in place.

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