Path: csiph.com!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!feeder.usenetexpress.com!tr2.eu1.usenetexpress.com!news.uzoreto.com!news.etla.org!nntp-feed.chiark.greenend.org.uk!ewrotcd!usenet-its.stanford.edu!usenet.stanford.edu!not-for-mail From: Matus UHLAR - fantomas Newsgroups: comp.protocols.dns.bind Subject: Re: [Non-DoD Source] Re: Dumb Question is an A or AAAA record required? Date: Thu, 9 Jul 2020 15:43:18 +0200 Lines: 39 Approved: bind-users@lists.isc.org Message-ID: References: <1609C7EA8C9FEF4DBBDFA1E2FB502263BBC66156@UMECHPA7E.easf.csd.disa.mil> <20200709134318.GA29571@fantomas.sk> NNTP-Posting-Host: lists.isc.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: usenet.stanford.edu 1594302209 18629 149.20.1.60 (9 Jul 2020 13:43:29 GMT) X-Complaints-To: action@cs.stanford.edu To: bind-users@lists.isc.org Return-Path: X-Original-To: bind-users@lists.isc.org Delivered-To: bind-users@lists.isc.org X-Authentication-Warning: fantomas.fantomas.sk: uhlar set sender to uhlar@fantomas.sk using -f Mail-Followup-To: bind-users@lists.isc.org Content-Disposition: inline In-Reply-To: <1609C7EA8C9FEF4DBBDFA1E2FB502263BBC66156@UMECHPA7E.easf.csd.disa.mil> User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam-Status: No, score=1.5 required=5.0 tests=KAM_MXURI,SPF_HELO_PASS, SPF_PASS autolearn=disabled version=3.4.2 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on mx.pao1.isc.org X-BeenThere: bind-users@lists.isc.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: BIND Users Mailing List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <20200709134318.GA29571@fantomas.sk> X-Mailman-Original-References: <1609C7EA8C9FEF4DBBDFA1E2FB502263BBC66156@UMECHPA7E.easf.csd.disa.mil> Xref: csiph.com comp.protocols.dns.bind:15949 On 09.07.20 13:16, DeCaro, James John (Jim) CIV DISA FE (USA) via bind-users wrote: >Would the lack of A records affect pointer records? Seems like it would. pointer records are independent on A/CNAME records and irelevant in thie case. >-----Original Message----- >From: bind-users On Behalf Of Mark Andrews >Sent: Thursday, July 9, 2020 8:56 AM >To: @lbutlr >Cc: bind-users >Subject: [Non-DoD Source] Re: Dumb Question is an A or AAAA record required? > >At this stage one still needs A records to be reachable by everyone. One should also ensure you are reachable over IPv6 as lots of the world behind IPv6 only links as their ISPs don’t have enough IPv4 addresses for every one. Instead they have to use some form of IPv4 as a service which is significantly more expensive to operate compared to straight routers. >> On 9 Jul 2020, at 22:22, @lbutlr wrote: >> >> Given a domain that is hosted and used for email and web, is an A record for that domain actually required? >> >> That is, if bob.tld is hosted by example.com can you simply have >> >> NS ns1.example.com >> NS ns2.example.com >> MX mx.example.com >> >> www CNAME Caution-www.example.com >> >> Without specifying >> >> A 11.22.33.444 >> >> (I am pretty sure this is *technically* allowed, but is it really OK to do or are there reasons not to do this?) -- Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Quantum mechanics: The dreams stuff is made of.