Technology - How it Works

Technology includes:

Blacklisting to maintain up-to-date lists of large known spammers, compiled from anti-spam databases and groups. This is a living list that grows daily and is automatically updated automatically for each customer.

Keyword scanning methods include scoring systems for emails based on multiple criteria. If the email score exceeds defined thresholds, it is flagged as spam. We constantly monitor and update our keywords’ master library so you don’t have to.

Checksum technology tracks the number of times a particular message has appeared. If the message frequency exceeds threshold, it is blocked as spam.

Message authenticity check uses multiple algorithms to verify authenticity of a message. Some are simple checks such as “from address,” and others are more complex, relating to SMTP protocol.

Blacklists / Whitelists include Domains, IP’s, and email addresses that the customer wants Blacklisted (blocked) or Whitelisted (allowed through). Lists are maintained per user and per domain.

Rate controls are used to stop denial of service attacks as well as other service attacks.

Anti-virus technology includes:

Anti-virus protection is a built-in feature of Barracuda Spam Filtering. Updates are posted hourly to ensure the latest virus definitions are in place.

File type attachment blocking stops known malicious file types, such as VB script, from entering your network through emails. Attachments are also scanned using the built-in anti-virus protection.