From owner-freebsd-questions@FreeBSD.ORG Fri Apr 16 09:53:03 2004 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 011EB16A4CE for ; Fri, 16 Apr 2004 09:53:03 -0700 (PDT) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9F9B843D48 for ; Fri, 16 Apr 2004 09:53:02 -0700 (PDT) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.12.10/8.12.10) id i3GGqtqh029005; Fri, 16 Apr 2004 11:52:55 -0500 (CDT) (envelope-from dan) Date: Fri, 16 Apr 2004 11:52:55 -0500 From: Dan Nelson To: antenneX Message-ID: <20040416165254.GB2146@dan.emsphone.com> References: <200404151631.i3FGVGOf005743@dc.cis.okstate.edu> <20040415172633.GI28745@dan.emsphone.com> <001201c42360$d6fa58a0$0200000a@SAGEAME> <20040416040139.GM28745@dan.emsphone.com> <003d01c423cd$79251e00$0200000a@SAGEAME> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <003d01c423cd$79251e00$0200000a@SAGEAME> X-OS: FreeBSD 5.2-CURRENT X-message-flag: Outlook Error User-Agent: Mutt/1.5.6i cc: freebsd-questions@freebsd.org Subject: Re: Setting Sendmail to Refuse Possibly Forged Headers 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: Fri, 16 Apr 2004 16:53:03 -0000 In the last episode (Apr 16), antenneX said: > If I may ask one more thing about the milter-sender: > The only feature I really wanted from the milter was the option to > control the number of connections for "unknown users". I get a lot of > those -- dozens -- hundreds. I believe that is called the > "Rumplestilkin" (sp?) attack where a search is conducted for good > emails on a system. > > I have not yet seen this option available inside Sendmail and wonder > if there is one out there yet...?? -- without having to install the > milter? There's a confBAD_RCPT_THROTTLE value you can set, which will make sendmail add 1-second delays between checks after a specified number of invalid emails, but that's about all you can do from there. -- Dan Nelson dnelson@allantgroup.com