THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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- The Razor database (http://razor.sourceforge.net) Vipul Ved Prakash and Jordan Ritter allow Unix clients to work out of the same database used by the commercial customers of the Cloudmark system.
- Pyzor, a completely free database and software system, written by Frank Tobin. http://pyzor.sourceforge.net
- DCC, the Distributed Checksum Clearinghouse. http://www.rhyolite.com/anti-spam/dcc/
Note that these all require access to their servers through your firewall, if you have one. Read NetTestFirewallIssues for details.
DnsBlocklists can be queried via the network, so these are network tests too – but they get their own page.