Stop SMTP Attacks

Significant threats to the enterprise come in the form of Denial-of-Service (DoS) attacks, Dictionary Harvest Attacks (DHA), mail bombs, email flooding, and other attacks designed to interrupt service or collect corporate or personal email addresses. Because email utilizes the Simple Mail Transport Protocol (SMTP), an open-recipient system that allows anyone to send messages to anyone else without the recipient's permission, your email server is always at risk for these attacks. Email Defense is here to help.

Our Email Defense Service removes the threat of network probes and completely shields your network from vulnerability and attack. You can now conceal your Internet-facing mail servers and gateways, and remove the threat of anonymous connections without hassle. By pointing your Mail Exchange (MX) record to Email Defense, a real-time filtering process:

• Conceals your critical messaging gateways and shields groupware email servers from attack.
• Protects your email infrastructure at your network gateway, providing real-time monitoring and analysis of incoming messaging traffic.
• Instantly blocks Denial of Service and other SMTP-based attacks, including dictionary attacks, email bombs and email flooding.

Content and Attachment Filtering is standard in the Email Defense Service and provides organizations with a layer of protection at the network perimeter. This filtering enables Email Defense to identify, quarantine and block unwanted and malicious content in body copy and in attachments before they can enter your internal network.

Web bugs, intrusive and nearly imperceptible tags embedded in HTML that give spammers the ability to monitor end-user activity and obtain their information, are a nuisance. Luckily, our Content and Attachment Filtering includes an HTML shield that blocks web bugs as well as spam beacons.

What used to be a harmless click on an embedded email link to an unknown web site is now a security risk. Today, linking to suspect Web sites can open up enterprises and their users to email attacks and other security risks that can drain valuable resources. To combat this, Email Defense can warn users before they link to suspect Web sites--further increasing corporate control and security.

Email Defense also provides enterprises with insight into their users' email and Web behavior by enabling them to track URL click-throughs from email to the Web. In addition, they can monitor if users are clicking on Web sites that would have negative consequences that could expose their infrastructure to hackers and continuous attacks.

Email Defense enables administrators to build URL white lists using full URL descriptors, straight IP addresses, and entire domains--all while leveraging wildcard (*) characters to maximize coverage.

Enterprises can choose to enable and disable URL click-throughs from email, or display a warning message before allowing or denying the click. Once clicked, the link is temporarily redirected to a pre-customized warning message for the user. Depending on the policy settings for that particular URL, the user will either be denied or allowed access to it.

Administrators can also generate reports on any URL links that have been clicked by a user and obtain other statistics for tracking URL trends. Reports can be configured per user or for the entire domain.