Hi, I am interested in including the DWL feature from SpamHaus into postfix. First question:
Is there already a working mechanism to include this service and if not, how could this be done? As far as I understood, DWL works in the way that a sender includes a VBR-Info:-Header. That can simply be done with client_sender_access and PREPEND, ok. But on the receiving side, it becomes a bit more complicated: I use smtpd_recipient_restrictions for all of my tests. With DWL, this could become a problem, because the VBR-Header is sent in the DATA phase. So first question: Do I have to shift all my rules from smtpd_recipient_restrictions to smtpd_data_restrictions? Because my guess is that I have to use some kind of a pre-queue-milter to check for the VBR-Header and if it exists doing some DWL-DNS lookup. Finally an OK or DUNNO or whatever. If I leave the tests under smtpd_recipient_restrictions, an earlier rule could reject a client, even it was in the DWL list. I am trying to make my home-work, so I first ask here, if I really understood the way, how DWL should be used and how it could be done. I am also interested in implementing the milter, if there doesn't exist one already. Many thanks in advance Christian --- Roessner-Network-Solutions Bachelor of Science Informatik Nahrungsberg 81, 35390 Gießen F: +49 641 5879091, M: +49 176 93118939 USt-IdNr.: DE225643613 http://www.roessner-network-solutions.com
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