From owner-freebsd-hackers Thu Dec 28 01:36:16 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id BAA24253 for hackers-outgoing; Thu, 28 Dec 1995 01:36:16 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id BAA24234 Thu, 28 Dec 1995 01:36:05 -0800 (PST) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id KAA01027; Thu, 28 Dec 1995 10:36:02 +0100 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id KAA12984; Thu, 28 Dec 1995 10:36:01 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.7.3/8.6.9) id KAA04688; Thu, 28 Dec 1995 10:03:19 +0100 (MET) From: J Wunsch Message-Id: <199512280903.KAA04688@uriah.heep.sax.de> Subject: Re: Faking the IP address for a temporarily dead host To: jhs@freebsd.org Date: Thu, 28 Dec 1995 10:03:19 +0100 (MET) Cc: hackers@freebsd.org, postmaster@freebsd.org Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199512261337.OAA09011@vector.enet> from "Julian Stacey jhs@freebsd.org" at Dec 26, 95 02:37:19 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-hackers@freebsd.org Precedence: bulk As Julian Stacey jhs@freebsd.org wrote: > > What would be the technical ramifications of faking an IP address to be > that of a friend's FreeBSD system that has temporarily died ? > ( presumably mail for the users on that box is currently piling up in > sendmail queues around the world (inc. freefall)). I would prefer adding an MX record to a host in the neighbourhood, and deliver by UUCP finally (or temporarily make the MX forwarder recognize itself by another name, i.e. add it to the Cw class in sendmail.cf). Depending on the default TTL of the zone where this host is in, the new MX should propagate in reasonably short time, and the MX could finally still serve as a fallback. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)