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From LogSat Software:
SpamFilter is used by ISPs and companies running their SMTP servers. It is designed to be a proxy to your incoming SMTP server receiving all e-mails addressed to your domain. If the sender's IP is not blacklisted in DNS-MAPS based black lists then the e-mail is forwarded to your SMTP server. Our new SFBD (SpamFilter Distributed Database) is a huge database of spammer's IPs updated in realtime by all SpamFilter installations in the world. Anytime a company running SpamFilter ISP blocks an email, the sender's IP address is sent to our centralized SFDB database. This allows the SFDB filter to have access to a huge repository of spammer's IPs, updated in real-time by all the SpamFilter ISP installations in the world. Our database analyzes this data in realtime, and will block IPs that have sent excessive amounts of spam to multiple locations in the world in the spam of the previous few minutes. This allows the SFDB to be extremely accurate, effective, and to start blacklisting IPs within minutes of them sending spam. Our propietary SFDC (SpamFilter Distributed Content) filter is the latest filtering technology developed by LogSat Software. When SpamFilter ISP receives an email, it will analyze the email's contents and will calculate a 20-byte hash to characterize it. We developed technology that is able to detect similar emails based on their contents. SpamFilter will assign the same hash to similar emails. When SpamFilter detects that emails with the same hash signature are originating from several different locations, it will report such anomaly to our centralized servers. Our database analyzes, in real-time, this incoming flow of messages, and, based on their quantity, origin and destinations, is able to detect what signature hashes are generated by spam emails. The technology behind the SFDC allows our centralized database to detect spam signatures regardless of the email's text and contents, but rather base it on the patterns used by spammers to deliver their emails. A new filter to scan inside embedded images is also included. Statistical Bayesian DNA fingerprinting, along with dozens of blacklist/white rules are also be applied to filter spam. Examples are country filters, SPF and SURBL filters, remote DNS validation tests. An optional antivirus plug-in is available. End users have Web access to their quarantined e-mails. They can view, delete, and force delivery of their own quarantined e-mail without having to ask the system administrators.
What's new in this version: Version 4.2.4.851 features several more filtering techniques and bug fixes.
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All versions:
4.1 starsout of 36 votes
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Current version:
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"Profesional grade with full customization"
Version: Spam Filter ISP 4.2.4.834
Pros
Set and Forget. It handles hundreds of hits per second without any issue.
We can set custom filters for each domain, to be as agressive or passive as we want.Cons
No ability to look at your outbound emails to automatically generate a whiteList of email address's that you send to.
Summary
I looked at a huge range of products and could not find anything that gave me the flexibility and control without coughing up a fortune.
By far the best business grade AntiSpam solution. -
"Perfect and well done"
Version: Spam Filter ISP 4.1.2.812
Pros
Easy installation, accurate and simple to use
Cons
none so far
Summary
Does a great job - one of the best in the market.
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"Awesome product, the low price is misleading :-)"
Version: Spam Filter ISP 4.1.2.812
Pros
Accurate, simple to use, it places all files in a single directory, no registry entries - didn't think they made similar programs anymore!
Cons
Too bad we didn't see this last year, as we threw a $4,000/yr subscription service for another antispam application down the drain!
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"Very robust application. It does the job perfectly."
Version: Spam Filter ISP 4.1.2.812
Pros
Very easy to install and configure. It reduced our spam to virtually none with very little false positives. Compared to our previous product it requires almost no maintenance and care.
Cons
I cannot think of any major downsides.
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"For the price, this is a great product!"
Version: Spam Filter ISP 4.1.2.812
Pros
- $600 compared to $5000+ for other products
- Great customer serviceCons
- Interface could be a little more 21st century
Summary
Great price and excellent customer service. We had asked for a modification in the activity logfile format so we could perform better reporting with our in-house queries. LogSat had that done for us in a week. Try asking the same question to Symantec!
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"Resolved All our Spam problems 10 minutes after install"
Version: Spam Filter ISP 4.0.1.786
Pros
Very efficient (resource-wise), completely configurable, easy to use, great customer support. Extremely robust and reliable - even works when things like an Enterprise Database is not available - Amazing!
Cons
I don't have a customer calling me every day with Spam problems! :)
Summary
This product is incredible and has allowed our organization to focus on our mission - not mail problems. We have been using it for a year and I recommend to fellow colleagues who support mail - especially those who don't have time to support mail!
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"Accurate Program"
Version: Spam Filter ISP 4.0.1.786
Pros
Accurate Program
Cons
Accurate Program
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"I concur with the others. Excellent product."
Version: Spam Filter ISP 4.0.1.786
Pros
It's able to process our email traffic with an almost imperceptible CPU usage...! Finally a product that doesn't place files all over the place - this has everything in its own directory, and upgrades require only to replace the .exe file :-)
Cons
The administration web interface is still in beta and not super user-friendly, but we honestly prefer to use "real" GUIs in heneral to configure applications, so this is not a big problem.
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"Very accurate with awesome support"
Version: Spam Filter ISP 4.0.1.786
Pros
Inexpensive, very accurate, support is great - bug fixes in hours, not months, ask for a new feature and sometimes they will implement it within weeks... try having this with a bigger company!
Cons
Wish there was a version for Linux!
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"Super-affordable, and even better, super accurate!"
Version: Spam Filter ISP 4.0.1.786
Pros
There's an huge amount of filtering options available, even though out-of-the-box everything is incredibly accurate. Dropping two zeros from the price compared to other products made us think this was too good to be true. NOT! It's the real thing :-)
Cons
Wish we'd found it sooner...
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