Zyxel Anti-Spam utilizes several techniques to filter E-mail, detecting on both SMTP and POP3 packets through local rules and a real-time cloud database. It will not miss any spam mail filtered through our multi-layered scan engine.
Zyxel Anti-Spam can be enabled with the following layers of inspection to ensure the effectiveness:
A zombie network is a compromised computer system that can be remotely controlled by a hacker. The Zombie system is often used to send out spam, phishing attacks, and virus-laden emails. If your network has been compromised in this manner and it goes undetected, it is very possible that your organization’s IP address - the one used by the Zombie to send spam - could be blacklisted. Potentially, harmless e-mail from your organization’s IP address would be blocked as your IP address is on one or more blacklists.
Zyxel Anti-Spam service protects your email server’s IP reputation by detecting and stopping zombie-generated outbound spam, phishing, and virus e-mail. The global view database and cloud-based detection also provide the real-time security to defend against zombie attacks.
Zyxel Anti-Spam service not only detects and filters out spam and malware-carrying messages. Our Smart Report function will tag e-mail messages to warn end-users that the mail may be spam or malware in case an important message that was inadvertently infected. Network administrators can also set custom rules for filtering e-mail and decide how messages will be processed.