Projects / Vipul's Razor

Vipul's Razor

Vipul's Razor is a distributed, collaborative, spam detection and filtering network that exploits the broadcast characteristic of spam distribution to limit its propagation. The primary focus of the system is to identify and disable an email spam before its injection and processing is complete. Razor establishes a distributed and constantly updating catalogue of spam in propagation. This catalogue is used by clients to filter out known spam.

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Recent releases

  •  02 Jun 2006 06:18

    Release Notes: The discovery logic used for discovering Razor2 servers was updated. Several long-standing issues were fixed in discovery and TCP connectivity logic.

    •  14 Feb 2006 15:36

      Release Notes: When no reporter identity is found, an attempt to register automatically is made. When -home is specified on the command line, "global_razorhome" defaults to the provided value.

      •  07 Jul 2005 11:59

        Release Notes: This releases fixes several important discovery, accuracy, stability, and installation issues. The discovery process has been made more robust as handling of certain configuration options has been fixed. The handling of the -home option has been improved, and is now accepted without any overrides. The deHTML preprocessor has been made consistent with other Cloudmark clients. A bug has been fixed that would cause the shell to be unusable until forked under certain invocations of razor-agents. The support for the "sys- syslog" target has been reintroduced. The complementary razor-agents-sdk has also been updated.

        •  17 Jun 2005 02:55

          Release Notes: This release contains several important security and accuracy fixes. Preprocessing of certain HTML messages that resulted in a segfault has been fixed. Handling of certain malformed headers, which could cause large delays in message processing, has been fixed. Discovery logic has been simplified and optimized, and several discovery-related bugs have been fixed. TCP ping logic has been removed. Stale engine codes for various signature types have been removed. Several fixes have been made to the installation process.

          •  07 Dec 2004 03:08

            Release Notes: Support for country domain canonicalization has been introduced in the Whiplash signature scheme, promoting correct parsing of domains like foo.co.uk. This change affords a considerable improvement in accuracy. Revocation logic has been modified to do signature-only communications with the server. This is a privacy enhancement. A bug in "se" computation and a bug in "report by message" have been fixed. Everyone running Razor should consider upgrading immediately.

            Recent comments

            04 Jan 2003 08:45 sserv

            Re: exim?

            > % Yes; I'm using a procmail rule in my
            > % exim setup that
            > % adds "[SPAM]" and a X-header
            > % to all email that Exim
            > % reports as spam.
            >
            > Would you be so kind to supply an example?

            An example is provided by the man page razor-check(1):

            :0 Wc

            | razor-check

            :0 Waf

            | formail -A "X-Razor2-Warning: SPAM."

            30 Oct 2002 01:29 janus03

            Re: exim?

            >
            > % Does this work with Exim?
            >
            >
            > Yes; I'm using a procmail rule in my
            > exim setup that
            > adds "[SPAM]" and a X- header
            > to all email that Exim
            > reports as spam.


            Would you be so kind to supply an example?

            13 Jun 2002 23:48 dcardamo

            Great!
            This software is great! I've been using it for several months now and I would highly recommend it. I'd say it catches about 30-40% of my daily intake of spam.

            29 Jan 2002 17:40 stattenf

            Re: exim?

            > Does this work with Exim?


            Yes; I'm using a procmail rule in my exim setup that
            adds "[SPAM]" and a X- header to all email that Exim
            reports as spam.

            29 Dec 2001 05:35 jlennon

            exim?
            Does this work with Exim?

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