From owner-freebsd-questions Mon Apr 15 23:27: 7 2002 Delivered-To: freebsd-questions@freebsd.org Received: from chen.org.nz (adsl-210.54.19.51.quicksilver.net.nz [210.54.19.51]) by hub.freebsd.org (Postfix) with ESMTP id 524EB37B400 for ; Mon, 15 Apr 2002 23:27:05 -0700 (PDT) Received: from grimoire.chen.org.nz (localhost [127.0.0.1]) by chen.org.nz (8.12.2/8.12.2) with ESMTP id g3G6R3be000752 for ; Tue, 16 Apr 2002 18:27:03 +1200 (NZST) (envelope-from jonc@grimoire.chen.org.nz) Received: (from jonc@localhost) by grimoire.chen.org.nz (8.12.2/8.12.2/Submit) id g3G6R3pG000751 for freebsd-questions@freebsd.org; Tue, 16 Apr 2002 18:27:03 +1200 (NZST) Date: Tue, 16 Apr 2002 18:27:03 +1200 From: Jonathan Chen To: freebsd-questions@freebsd.org Subject: Denying incoming email connection with Sendmail Message-ID: <20020416182703.A717@grimoire.chen.org.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi, Anyone here know how to configure sendmail to reject incoming email from IP addresses that don't reverse-lookup to a host-name? At the moment sendmail only looks up domain in the "From:" header, which is pretty useless when dealing with spammers. Cheers. -- Jonathan Chen ---------------------------------------------------------------------- If you're right 90% of the time, why quibble about the remaining 3%? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message