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Stop spam dead in its tracks!

• SpamCheetah is a very innovative spam filter product that makes your e-mail experience as fast as the leap of a Cheetah. It is a LiveUSB and does not touch your computer's hard disk in any way. You can however install to a hard disk and boot from it if you want.
• You can download the USB image from Brothersoft who is our affiliate selling partner. SpamCheetah was awarded the editor's pick award.
• This technology does not even allow spam to enter into your network. You save bandwidth, storage costs, hurt the spammer and also reduce spam sent to others! It stops the spam right in its tracks. Uses OpenBSD greylisting + Tarpit + blacklist of known spam senders. It also comes built in with 100% uptime guarantee through a failover mechanism and it does round robin load sharing of multiple mail servers.
• Never allow a single mail to miss its target. And never allow a single spam message to slip through. Completely arrests the botnet spew. Botnets are used with a series of open relay mail servers operating in tandem to automate the sending of e-mails.
• Built with a feature called greytrapping that hurts spammers. You can configure bogus e-mail IDs that spammers harvest of guess and hurt spammers!
• SpamCheetah comes with a fantastic web interface that will blow you over with its features that include detailed hourly, weekly and monthly reports on every possible statistic that it can provide.
• How does SpamCheetah differ from stock OpenBSD? Read this.
• You can also read this thesis on spam filtering and antispam techniques
• Why should you trust us? One of us maintains a few ports for OpenBSD
• Download the USB image for the x86 family of machines right away and try it out! If you have some other architecture that OpenBSD supports , then you can always create your own LiveCD by following this. Alternately you could have SpamCheetah on a 1 GB stick.
• You now have the option of installing SpamCheetah to a hard disk or USB pen drive by booting from the USB image. Refer the README for more.
• A product of Gayatri Hitech that forces mail senders to be RFC compliant.
• Product brochure is here
• You can look at SpamCheetah internals document here
• Bob Beck's fascinating real life experience about OpenBSD spamd here. Please also read this.
• Also look at spamHints for related theory
• SpamCheetah is an implementation of the problems explained in this paper. It uses TCP flow control and traffic shaping techniques to achieve its goal of not letting spam into your premises.
• SpamCheetah is also an implementation of the approach mentioned by none other than Dave Crocker, the author of RFC 821 here.

Also in Youtube. This video illustrates the famous OpenBSD tarpit.

Also in Youtube. This is the web interface of SpamCheetah.

Customers in India have the option of SpamCheetah in a box. Please call +91-9444874881 for a trial installation of the appliance in your premises.

Some customers in Chennai

The web interface will not work in IE and Mozilla Firefox is the preferred browser.

E-mail AntiSpam Strategies and spam filters compared

Approach	Vendors, tools	Pros	Cons
Content scanning	Spamassassin, dspam, Bayesian filtering, CRM114 discriminator	Very popular spam filter	False positives, Very very slow, brings down mail processing speeds. Heavy load on the computer that performs this task. Very error prone too. Requires a lot of maintenance and baby sitting.
Plain vanilla greylisting	Available with most MTAs and commercial vendors. Examples include postgrey, qmail and so on.	No false positives. Fairly good catch rate and you can combine this with other tools for content scanning. Also reasonably fast.	Mail slows down by 4 hours or so. Spam catch rate is low as many spammers know how to get around greylisting.
OpenBSD greylisting + tarpit + blacklisting (SpamCheetah)	Available in all OpenBSD installations, comes with base. Not found in other BSDs or linux.	Very high spam catch rate. Very fast, requires low resources and requires no manual intervention. Zero false positives. Uses Berkeley db, so very fast and can run on embedded platforms.	There is an initial delay of 4 hours but this happens only the first time. After that mail flows at wire speed. Practically not an issue.
A combination of various concoctions	Many commercial vendors like Barracuda and Ironport do this. Even some homebrew solutions by UNIX hackers with open source MTAs and other tools like Spamassassin	Good spam catch rate. Integrated mail solution, big brand names. Customer comfort and popularity.	Very expensive. Often not necessary. False positives are not ruled out.

Call +91-9444874881 for sales enquiries