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Postini anti-spam patent could cause headaches

configure   on 27 March 2004 - 04:41 · 4 comments & 137 views

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A patent granted to managed e-mail security company Postini could pose problems for the company's competitors and others in the managed e-mail services market, experts warn.

If enforced, the patent, which covers an e-mail "pre-processing service" could grant Postini legal ownership of a wide range of anti-spam and e-mail security methods. However, some industry experts doubt that the patent, filed in September 2000, will stand up to legal scrutiny.

Patent #6,650,890 was awarded to Postini by the U.S. Patent and Trademark Office (USPTO) in November 2003. The patent cites three inventors, including Postini cofounder and Vice President Scott Petry and former employee Gordon Irlam. The patent describes a variety of methods for providing messaging services in an e-mail network, according to the USPTO Web site.

Among other things, the patent covers the use of an "intermediate pre-processing service (in) the electronic message delivery path" that requires changing the "Domain Name Server entry... of the destination email server to contain an IP address of the intermediate pre-processing service."

Different methods of message "pre-processing" are addressed in the patent, including forwarding based on instructions stored in user profiles, forwarding parts of the e-mail message content, forwarding e-mail to wireless devices, junk e-mail filtering, and virus detection, according to the patent.

Companies like Postini, MessageLabs, MX Logic and Frontbridge Technologies intercept inbound e-mail on behalf of their customers, then filter out spam, viruses and other unsuitable messages before sending the remaining e-mail messages on to the customer e-mail server and the message's intended recipient.

View: Read more at Network World Fusion
News source: Network World Fusion


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Post a comment · Send to friend Comments · There are 4 additional comments
#1 roadwarrior on 27 Mar 2004 - 05:04
The PTO seriously needs to halt all new software related patents, and take a step back and have a team of competent people review current software patents such as this to make sure that they are actually valid and not covered by prior art or something that is simply common knowledge. These daily lawsuits over patents have gotten WAY out of hand.
#2 sodapop on 27 Mar 2004 - 05:05
My ISP uses Postini. You have an option to turn it off and I set it to off. My mozilla filters work better.
(1 reply) #3 Octol on 27 Mar 2004 - 06:18
My ISP also uses Postini, and I love it. I have my filtering set to "agressive", and it catches everything, and at worst it only snags about two legitmate emails a month—which of course I tell the system to deliver.

The really nice thing about this service is that their virus defs are always up to date, and I can examine (and read if I want) all this email without first having to download it off the server. That way I don't have to worry about, for example, the next guy who figures out how to infect systems by merely downloading an infected email. I can't get infected because this crap never makes it to my computer.

I don't care how good regular client email filters are. I you use a client filter, you still have to download everything to your computer before it can be filtered. This is inherently dangerous given the increasing sophistication of spammers and other malware creators.
#3.1 Grappa on 29 Mar 2004 - 19:45
Um, that's great, but it's got absolutely f-all to do with the real topic of the news article: the problem the patent creates for competition (and the fact that there's prior art involved.)

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