From owner-cvs-all Wed Jul 29 20:13:33 1998 Return-Path: Received: (from daemon@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA19075 for cvs-all-outgoing; Wed, 29 Jul 1998 20:13:33 -0700 (PDT) (envelope-from owner-cvs-all) Received: from ns.mt.sri.com (sri-gw.MT.net [206.127.105.141]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA19069 for ; Wed, 29 Jul 1998 20:13:32 -0700 (PDT) (envelope-from nate@mt.sri.com) Received: from mt.sri.com (rocky.mt.sri.com [206.127.76.100]) by ns.mt.sri.com (8.8.8/8.8.8) with SMTP id VAA03157; Wed, 29 Jul 1998 21:13:24 -0600 (MDT) (envelope-from nate@rocky.mt.sri.com) Received: by mt.sri.com (SMI-8.6/SMI-SVR4) id VAA01265; Wed, 29 Jul 1998 21:13:23 -0600 Date: Wed, 29 Jul 1998 21:13:23 -0600 Message-Id: <199807300313.VAA01265@mt.sri.com> From: Nate Williams MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: Peter Wemm Cc: Nate Williams , Sean Eric Fagan , committers@FreeBSD.ORG Subject: Re: sendmail 8.9.x In-Reply-To: <199807300308.LAA04703@spinner.netplex.com.au> References: <199807292333.RAA00686@mt.sri.com> <199807300308.LAA04703@spinner.netplex.com.au> X-Mailer: VM 6.29 under 19.15 XEmacs Lucid Sender: owner-cvs-all@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk [ FEATURE(relay_based_on_MX) ] ... > What the second doesn't stop, is if somebody "out there" decides to list > your.machine.com as a fallback MX for their.domain.com. If they go down, > your machine will start getting mail in it's queue even though you've > never heard of them before. Couldn't this cause email to be sent *from* your machine if you setup your domain to never have it's 'domain.com' machine ever accept email, thus causing your machine to get spammed by the email being generated for 'spam.com'. Nate