Hi Ulrich, after a bit of reading on the project site, there is one thing, i see a little bit critical:
On the "about" page there is a "Simple Setup" example. In this you describe: - Postfix accepts and receives (or rejects) the mail and delivers it to the Detective. - The Detective might reject the mail, which will force postfix to bounce it, or passes it again and re-inject it into another postfix process. I i understand this right, postfix would bounce the mail after it was accepted for delivery. This would cause backscatter. And a backscattering spamfilter is as bad as a real spamserver. Greetings from Germany, ------------------------------------------------------------------------ Thomas Berger - Certified Linux/Cisco Networking Engineer - BOREUS Rechenzentrum GmbH Zur Schwedenschanze 2 D - 18435 Stralsund Germany Phone:+49 (0) 38 31 - 36 76 415 Fax: +49 (0) 38 31 - 36 76 615 eMail: t...@boreus.de Internet: http://www.boreus.de/ -------------------------------------------------------------------------- Geschäftsführer: André Jahns, Holger Lebrecht Handelsregister: Amtsgericht Stralsund HRB 5750 Sitz der Gesellschaft: Stralsund Am Mittwoch, 25. Mai 2011, 10:20:21 schrieb Ulrich Kautz: > Hello all > > i wrote another anti SPAM framework called Decency, which works perfectly > with Postfix. It's based on Perl POE and Mouse and is highly modularized / > componentized. Since something last week, it has earned it's own website: > http://www.decency-antispam.org > Also on github: > https://github.com/ukautz/decency > The CPAN release is heavily outdated and will be renewed at the end of this > month. > > In short what it does: > * It has a policy server, called Doorman, implementing techniques such as > Greylisting, Geo Weighting, DNSBLs, Honeypot building, SPF and so on. > * The second component is a content filter, called Detective, which > implements third party filters (CRM114, DSPAM, ..), virus filters (for now: > ClamAV) and also performs internal filtering, such as DKIM, deeper DNSBLs checks (Received-header) and also can act as an Archiving facility. > * Its modular build, everybody can extend it. > * Designed for single mail filter boxes as well as distributed structures. > * Open source. > * Simple configuration (imho). > * More on the mentioned website.. > > I used it in production for about half a year. Currently it's going towards > public stable version 0.2.0. > > Any feedback, critic, help, whatever is welcome. > > Greets from Berlin > Ulrich >
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