Date: Sun, 19 Oct 2008 18:25:16 +0200 From: Jos Chrispijn <jos@webrz.net> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Postfix communicating with IPFW Message-ID: <48FB5F6C.6070205@webrz.net>
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Dear FQ, I recently got attacked with some dsl subscribers of this (imaginary) some.net domain. These subscribers present themselves as [ip address.dynamic.some.net]. Postfix SMTP server: errors from 66-66-66-166.dynamic.some.net [66.66.66.166] What I would like to do is to generate a some.net list with all these dynamic ip addresses and provide them to my ipfw firewall in order to block them on the moment that they try to relay a 2nd time thru my server. This will cause less process time as it is quicker to send someone home by the doorkeeper (ipfw) rather than check his credentials first (Postfix) and tell him to get lost. Is there any way to let postfix 'communicate' with my ipfw firewall? Jos Chrispijn
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