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Email Security 6.2 Implements Bounce-Address-Tag-Validation (BATV) to Ensure Message Legitimacy
June 2008 by Marc Jacob
SonicWALL, Inc. announced SonicWALL Email Security 6.2, which features the Bounce-Address-Tag-Validation (BATV) specification to combat an increase in Non-Delivery Report (NDR) spam or backscatter messages. With the BATV mechanism turned on, the product can distinguish a legitimate NDR message from an NDR spam message - dropping the connection from the NDR spam server.
NDR spam is yet another form of spam mimicking a useful email capability - the bounce back message received when a valid email is unable to make it to its final destination inbox. By implementing BATV, each outbound message is "tagged" with a private key, transparently to the sender. Arriving NDR messages are checked for the "tag" to ensure the validity of the inbound NDR email with legitimate NDR messages being delivered to the receiver as desired. Because SonicWALL Email Security can process both inbound and outbound email on the same system the actual implementation of BATV can be seamless to the customer as well as the end-users of the system.
Other SonicWALL Email Security 6.2 features include:
* Enhanced international effectiveness by improving language detection capabilities. This allows SonicWALL Email Security to properly determine the language of an email regardless of the tricks a spammer may use to disguise or misuse different character sets. In this release Dutch, French and Swedish are added
* Enhanced performance monitoring which allows administrators to see a visual representation of performance metrics on the SonicWALL Email Security system
* Simplified Licensing - SonicWALL has eliminated user-bands and now allows a customer to choose any SonicWALL Email Security Appliance or Software system for their organization. Subscription services can be purchased and stacked in user packs of 25, 50, 100, 250, 500, 750, 1000, 2000, 5000, and 5000+ as needed
