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Thread: Cisco Spam Blocker
2009-03-18, 17:57 #1
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- Tacoma, Washington, USA
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Every day our network gets hit hard with spam. The spam filtering software wasn't enough so a couple years back we added two Deep Six DS200 spam boxes at the firewall. These boxes analyze the integrity of the sender mail server but not the email itself or its contents. Just the sender's mail server. It's worked fantastic for us. It significantly reduced the spam. Unfortunately, since we implemented them the company that produced them has pretty much gone under. No updates have been issued and it doesn't look like there ever will be.
This week we ran into some trouble after another DNSBL service closed, causing the spam boxes to take longer than the norm to analyze the connections. Mail from major clients was being bounced back to them as failed. I found a workaround to get things back to normal for now but ultimately I'm going to have to find something else to take their place.
The Cisco Spam Blocker has been recommended to me. http://www.cisco.com/en/US/prod/collateral...c78-509772.html This is apparently based on a product formerly produced by IronPort which Cisco bought out. Does anyone have experience with this unit? Or have another recommendation for me to consider? All feedback is much appreciated.Daisy
2009-03-20, 15:53 #2
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- Feb 2001
- Silicon Valley, USA
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[quote name='ailios' post='766114' date='18-Mar-2009 15:57']The Cisco Spam Blocker has been recommended to me. http://www.cisco.com/en/US/prod/collateral...c78-509772.html This is apparently based on a product formerly produced by IronPort which Cisco bought out. Does anyone have experience with this unit? Or have another recommendation for me to consider?[/quote]
I remember IronPort, but I don't know much about their product (then or now).
We use Postini, which is a managed service provider that was purchased by Google. You change your MX records to point to Postini and Postini delivers the good mail to you, bounces the most useless, and quarantines the remainder. Users then can check the quarantine using a browser. Depending on your volume of mailboxes and your reseller's pricing, this might or might not be more cost effective than operating your own filters.
Other competitors: SonicWALL bought MailFrontier, which has been around for several years, and folded its technology into a line of appliances. Moving in the other direction, Trend Micro recently started a hosted service based on a combination of its own anti-spam technology and reputation services acquired from Kelkea. I think they all offer free trials, although of course changing your MX records is not something to do lightly.
Trend Micro: http://us.trendmicro.com/us/products/enter...osted-security/
2009-03-20, 17:08 #3BrianLivingstonGuest
The Deep Six antispam appliance was a startup product that we discovered, tested, and wrote an article about in the Windows Secrets Newsletter back in January and February 2006:
It appears that the company has given up the ghost. I'm sorry that I have no specific information about the Cisco device, but you could look at our old tests to see the effectiveness of those in our test suite. The other makers we tested were IronPort, Barracuda, Network Box, Borderware, and F-Secure.