From owner-cvs-all@FreeBSD.ORG Mon Feb 18 22:22:34 2008 Return-Path: Delivered-To: cvs-all@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C69EC16A46E for ; Mon, 18 Feb 2008 22:22:34 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: from mail2.fluidhosting.com (mx24.fluidhosting.com [204.14.89.7]) by mx1.freebsd.org (Postfix) with SMTP id 6835413C4F0 for ; Mon, 18 Feb 2008 22:22:33 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: (qmail 19542 invoked by uid 399); 18 Feb 2008 22:22:32 -0000 Received: from localhost (HELO ?192.168.0.4?) (dougb@dougbarton.us@127.0.0.1) by localhost with ESMTP; 18 Feb 2008 22:22:32 -0000 X-Originating-IP: 127.0.0.1 Message-ID: <47BA0525.8000700@FreeBSD.org> Date: Mon, 18 Feb 2008 14:22:29 -0800 From: Doug Barton Organization: http://www.FreeBSD.org/ User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: Guy Helmer References: <200802160016.m1G0GnFB046558@repoman.freebsd.org> <20080216024541.GA31498@nagual.pp.ru> <20080215.233427.1598351542.imp@bsdimp.com> <47B7746A.8080403@delphij.net> <47B99880.1060306@palisadesys.com> In-Reply-To: <47B99880.1060306@palisadesys.com> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: src-committers@FreeBSD.org, d@delphij.net, ache@nagual.pp.ru, cvs-all@FreeBSD.org, delphij@FreeBSD.org, cvs-src@FreeBSD.org, "M. Warner Losh" Subject: Re: cvs commit: src/lib/libc/resolv res_comp.c X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Feb 2008 22:22:34 -0000 Guy Helmer wrote: > I've been recently looking at DomainKeys, and underscores appear to be > typically used in the domain components for domain keys TXT records > (example below from > http://www.elandsys.com/resources/sendmail/domainkeys.html): > > mail._domainkey.example.com. IN TXT "k=rsa; t=y; > p=MEwwPQRJKoZIhvcNADAQCQADOwAwOAIxANPpYHdE2tevfEpvL1Tk2dDYv0pF28/f5MxU83x/0b > sn4R4p7waPaz1IbOGs/6bm5QIDAQAB" "example.com" is the domain name above. _domainkey.example.com is a hostname. There are no TLD registries that accept underscore in domain name registrations, but it's extremely difficult to determine reliably where the domain name ends and the hostname begins for all TLDs. This debate is one of the few negative fallouts of the robustness principle. Since others have refused to be "conservative in what they send" we are forced to be "liberal in what we accept" (as much as I find it distasteful on a personal level). Doug -- This .signature sanitized for your protection