From owner-freebsd-isp Wed Nov 26 10:14:14 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id KAA06339 for isp-outgoing; Wed, 26 Nov 1997 10:14:14 -0800 (PST) (envelope-from owner-freebsd-isp) Received: from DNS.Lamb.net (root@DNS.Lamb.net [207.90.181.1]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id KAA06334 for ; Wed, 26 Nov 1997 10:14:12 -0800 (PST) (envelope-from ulf@Gatekeeper.Alameda.net) Received: (from uucp@localhost) by DNS.Lamb.net (8.8.6/8.8.6) id KAA24299; Wed, 26 Nov 1997 10:14:19 -0800 (PST) Received: from gatekeeper.Alameda.net(207.90.181.2) via SMTP by DNS.Lamb.net, id smtpd024297; Wed Nov 26 10:14:14 1997 Received: (from ulf@localhost) by Gatekeeper.Alameda.net (8.8.6/8.7.6) id KAA18501; Wed, 26 Nov 1997 10:14:05 -0800 (PST) From: Ulf Zimmermann Message-Id: <199711261814.KAA18501@Gatekeeper.Alameda.net> Subject: Re: What happens if? In-Reply-To: <19971126144003735.AAA238@GADIANTON.campbellsci.com> from Gary Travis Roberts at "Nov 26, 97 07:42:36 am" To: travis@campbellsci.com (Gary Travis Roberts) Date: Wed, 26 Nov 1997 10:14:05 -0800 (PST) Cc: freebsd-isp@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL31 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-isp@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > Sorry, This is a little off the subject. > We had an interesting experience here this last Monday when our > service provider's (the one that provides our connection to the > Internet backbone) router failed. When this happened our domain was > essentially unreachable. My question to the group is. What happens > to E-mail in this situation. We have a few theorys here, but have > never read anything that explicitly states that these are fact. > Anyone know for sure what is going on with E-mail for servers that > are unreachable? Is there such a thing as lost E-mail? > We currently are using Netscape Mail Server and NT but have since > grown wiser and are now in the process of moving our systems to Free > BSD. Thanks for your help. > > G. Travis Roberts KC7HHK > MIS Software Engineer / Assistant Network Administrator > Campbell Scientific, Inc. If people trying to send you email, have a good smtp, they will spool the email. But they might see warnings with "Domain not found" messages. I would always recommend to have an offsite secondary DNS server, for best not even in the same network as your upstream. You also should then see to have a backup MX record, which will only used, if everything else is down. Ulf. --------------------------------------------------------------------- Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-769-2936 Alameda Networks, Inc. | http://www.Alameda.net | Fax#: 510-521-5073