SonicWall announced Tuesday a new version of the e-mail security gateway software and appliance it acquired upon purchasing MailFrontier earlier this year.
SonicWall E-mail Security 5.0 includes new means for trapping spam and enhanced content-compliance features for outbound messages.
Among the new spam-detection features is an image-thumbprinting technology that helps catch image-based spam, or e-mail with
text messages hidden inside an image that evade traditional spam filters. SonicWall collects feedback from its network of
users regarding which of these e-mails with images are spam, and then blocks them accordingly, officials say.
In addition to reporting on image e-mails that are spam, users can report on those that aren’t, therefore reducing the potential
for false positives, the company says.
The new feature is designed to help large and small organizations get a handle on threats entering their organizations via
e-mail. Company officials quote an IDC report that says IT managers now rank spam as the third-greatest threat to their organizations.
On the outbound e-mail end, Version 5.0 includes compliance features that help organizations enforce regulations such as the
Sarbanes-Oxley Act, the Gramm-Leach-Bliley Act and the Health Insurance Portability and Accountability Act by flagging e-mails that may contain sensitive data protected by these laws. The product uses record ID matching to detect
predefined values such as Social Security and credit card numbers, includes predefined dictionaries to match keywords, and
includes predefined policies regarding content filtering, officials say.
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