With Astaro Security Gateway Email Filtering, network administrators to gain a simple and effective way to:

• Stop spam. Implement state of the art anti-spam features to minimize productivity loss and security vulnerability. Stop threats before they reach email servers.
• Prevent phishing. Block emails from criminals trying to trick users into revealing confidential information. Furthermore, prevent unsuspecting users from clicking links to fraudulent websites.
• Block viruses. Achieve unmatched detection rates for known and unknown malware. All traffic (SMTP and POP3) is inspected through two scan engines.
• Encrypt Emails. Use standard encryption methods to prevent unauthorized interception of emails. Client software is not required; all processes are transparently handled at the gateway. 

• Scanning of in and outbound POP3 and SMTP traffic
• Scanning of encrypted and compressed attachments
• Protection against server exploits with included email IPS
• Unproductive emails can be marked, quarantined or deleted
• Web portal and daily reports about blocked emails for user self-servicing actions
• Anti spam featuring techniques such as Recurrent Pattern Detection (TM), grey-listing, RBL, pattern, heuristics, SPF, BATV, URLs and B/W lists
• Anti virus with two engines featuring over 300,000 patterns and zero-day heuristics
• Multilingual and multinational character and pattern sets are supported

• Transparent en/decryption and digital signing of SMTP emails
• Scan encrypted emails, encrypted and compressed attachments
• Support for OpenPGP, S/MIME and TLS encryption standards
• Allows usage of internal or external certificate authorities (CA)
• Fully supports X.509 standard for digital certificates