From owner-freebsd-questions Mon Jan 26 17:10:14 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA05989 for questions-outgoing; Mon, 26 Jan 1998 17:10:14 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from cedb.dpcsys.com (cedb.dpcsys.com [206.16.184.4]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA05961 for ; Mon, 26 Jan 1998 17:10:03 -0800 (PST) (envelope-from dan@dpcsys.com) Received: from localhost (dan@localhost) by cedb.dpcsys.com (8.8.5/8.8.2) with SMTP id BAA09105; Tue, 27 Jan 1998 01:10:04 GMT Date: Mon, 26 Jan 1998 17:10:04 -0800 (PST) From: Dan Busarow To: alchemy@inconnect.com cc: questions@FreeBSD.ORG Subject: Re: e-mail w/dynamic IPs In-Reply-To: <19980126224306.3434.qmail@shell.inconnect.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk On 26 Jan 1998 alchemy@inconnect.com wrote: > The big problem I'm having is with only certain domains (FreeBSD.org is one of > them). Whenever I send e-mail to these domains, I always end up with a message > from Mailer-Daemon saying that magus.inconnect.com must resolve. Obviously, This is technique that is being used by many sites (including freebsd.org :) to limit spam. A very large chunk of incoming spam is from unresolvable hosts, and very little (to none) of such hosts are sending valid mail. That's the why. How to fix, in your sendmail.cf set DM to DMinconnect.com and your mail will go out without the offending magus in the FROM: Dan -- Dan Busarow 714 443 4172 DPC Systems / Beach.Net dan@dpcsys.com Dana Point, California 83 09 EF 59 E0 11 89 B4 8D 09 DB FD E1 DD 0C 82