Difference between revisions of "How Imaginet blocks spam"
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Imaginet uses a bespoke spam filtering system aimed at providing the best possible spam filtering with near-zero [http://en.wikipedia.org/wiki/False_positive#False_positive_error false-positives]. Techniques used include: | Imaginet uses a bespoke spam filtering system aimed at providing the best possible spam filtering with near-zero [http://en.wikipedia.org/wiki/False_positive#False_positive_error false-positives]. Techniques used include: | ||
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| + | - [http://en.wikipedia.org/wiki/DNSBL URIBLs and RBLs]: internal, [http://dnsbl.invaluement.com/ Invaluement], [http://sorbs.net SORBS], [http://www.gbudb.com/truncate/ GBUDB], [http://wl.org.za/ Whitelist ZA] | ||
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| + | - Virus and [http://sanesecurity.com/ spam] filtering with [http://www.clamav.net/lang/en/ ClamAV] | ||
- Checking of mail against a 'fuzzy' checksum database generated from mail received by [http://en.wikipedia.org/wiki/Spamtrap spamtraps] | - Checking of mail against a 'fuzzy' checksum database generated from mail received by [http://en.wikipedia.org/wiki/Spamtrap spamtraps] | ||
- [http://osbf-lua.luaforge.net/papers/osbf-eddc.pdf Advanced bayesian statistics] | - [http://osbf-lua.luaforge.net/papers/osbf-eddc.pdf Advanced bayesian statistics] | ||
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- Global and [https://my.imaginet.co.za customer-operated] address blacklists & whitelists | - Global and [https://my.imaginet.co.za customer-operated] address blacklists & whitelists | ||
Latest revision as of 14:25, 14 August 2014
Imaginet uses a bespoke spam filtering system aimed at providing the best possible spam filtering with near-zero false-positives. Techniques used include:
- URIBLs and RBLs: internal, Invaluement, SORBS, GBUDB, Whitelist ZA
- Virus and spam filtering with ClamAV
- Checking of mail against a 'fuzzy' checksum database generated from mail received by spamtraps
- Advanced bayesian statistics
- Global and customer-operated address blacklists & whitelists
- Strict enforcement of SPF
Spam-filtered mail is delivered to a Spam Quarantine or, if there is enough of a consensus between the systems we employ, discarded.
You can help us improve accuracy by reporting misclassified mail to us, please see How to report spam to Imaginet
How you can blacklist email addresses
