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Most of the benefits of the new Cloudnet Email Firewall system will take effect for Cloudnet users automatically. There is no need to read this documentation and learn about the different settings, unless you would like to fine-tune your settings to make them more effective at identifying spam.
1. Retains the functionality of the old Email Filters system
As has been done in the past, Cloudnet will continue to block messages that are confirmed as spam or that contain viruses. (Messages that match spam or viruses already on file) All the options for how to treat spam are still available, as are the Allow and Deny lists (now called the Whitelist and Blacklist.)
2. Greater flexibility for users filter settings
A big improvement in the new Cloudnet Email Firewall system is how email that may or may not be spam is handled. In the past Cloudnet email users could set their filter level, and then had to CHOOSE to either label spam but deliver it, save it in a trash folder, or immediately delete it. With the new system users have ALL THREE of these options available, with each based on it's own filter level setting!
For example, in the past you could set your filter level at 4.0 and then have anything greater than that saved in your trash folder.
Now you can set your filter level (called Tag Score in the new system) to 4.0, your Quarantine Score to 6.0, and your Block Score to 8.0. Messages below 4.0 are delivered as normal, messages between 4.0 and 6.0 are delivered but marked as [SPAM], messages between 6.0 and 8.0 are quarantined on the Cloudnet Email Firewall for you to review later, and anything over 8.0 is blocked and immediately deleted!
3. Automatic updating of global spam and virus rules
In the past, updating the default rules used for identifying spam and viruses required manual attention from a Cloudnet System Administrator. The new Cloudnet Email Firewall system gets automatic updates for these rules every hour!
4. Ability for users to "train" their own spam settings
The Cloudnet Email Firewall system now allows users to "train" their email settings to more effectively identify spam. This is done through something called Bayesian Learning. Basically, you can teach the Cloudnet Email Firewall to recognize what you consider to be spam by indicating which messages are spam and which ones are not. You can do this in your Quarantine Inbox (see additional documentation.) This is a particularly useful way of fine tuning your settings, since no two people's definition of spam is quite the same!