From owner-freebsd-questions@FreeBSD.ORG Mon Aug 4 15:38:01 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 127DB37B401 for ; Mon, 4 Aug 2003 15:38:01 -0700 (PDT) Received: from chen.org.nz (chen.org.nz [210.54.19.51]) by mx1.FreeBSD.org (Postfix) with ESMTP id 01E2D43FA3 for ; Mon, 4 Aug 2003 15:38:00 -0700 (PDT) (envelope-from jonc@chen.org.nz) Received: from grimoire.chen.org.nz (localhost [127.0.0.1]) by chen.org.nz (8.12.9/8.12.9) with ESMTP id h74MbbpI078899; Tue, 5 Aug 2003 10:37:37 +1200 (NZST) (envelope-from jonc@grimoire.chen.org.nz) Received: (from jonc@localhost) by grimoire.chen.org.nz (8.12.9/8.12.9/Submit) id h74Mbb9j078898; Tue, 5 Aug 2003 10:37:37 +1200 (NZST) (envelope-from jonc) Date: Tue, 5 Aug 2003 10:37:37 +1200 From: Jonathan Chen To: Stephen Hovey , freebsd-questions@freebsd.org Message-ID: <20030804223737.GA78859@grimoire.chen.org.nz> References: <20030804211522.GA13520@happy-idiot-talk.infracaninophile.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030804211522.GA13520@happy-idiot-talk.infracaninophile.co.uk> User-Agent: Mutt/1.4.1i Subject: Re: Sendmail/wrappers question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Aug 2003 22:38:01 -0000 On Mon, Aug 04, 2003 at 10:15:22PM +0100, Matthew Seaman wrote: > On Mon, Aug 04, 2003 at 05:09:56PM -0400, Stephen Hovey wrote: > > > > whats the surest way to prevent mail hosts with no reverse dns from being > > able to connect/send email? > > > > The hosts.allow example seem more accurately ident'ing and refusing than > > check there is a reverse dns. > > > > Any insight is appreciated! :) > > That's been covered on this list fairly recently: > > http://freebsd.rambler.ru/bsdmail/freebsd-questions_2003/msg23474.html And be aware that there are quite a few legitimate small servers out there that _don't_ have a reverse DNS set up.. However, having said that, the rules block a *LOT* of spam from China and Korea. Cheers. -- Jonathan Chen ---------------------------------------------------------------------- "I don't want to achive immortality through my works.. I want to achieve it through not dying" - Woody Allen