From owner-freebsd-questions Sun Mar 12 13:18:11 2000 Delivered-To: freebsd-questions@freebsd.org Received: from dt051n0b.san.rr.com (dt051n0b.san.rr.com [204.210.32.11]) by hub.freebsd.org (Postfix) with ESMTP id 9C95E37BD0B for ; Sun, 12 Mar 2000 13:18:03 -0800 (PST) (envelope-from Doug@gorean.org) Received: from gorean.org (doug@master [10.0.0.2]) by dt051n0b.san.rr.com (8.9.3/8.9.3) with ESMTP id NAA72947; Sun, 12 Mar 2000 13:17:55 -0800 (PST) (envelope-from Doug@gorean.org) Message-ID: <38CC0982.B54CC5@gorean.org> Date: Sun, 12 Mar 2000 13:17:54 -0800 From: Doug Barton Organization: Triborough Bridge & Tunnel Authority X-Mailer: Mozilla 4.72 [en] (X11; U; FreeBSD 4.0-CURRENT-0307 i386) X-Accept-Language: en MIME-Version: 1.0 To: Matthew Joseff Cc: FreeBSD Questions List Subject: Re: CNAME vs A records (clarification) References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Matthew Joseff wrote: > > Can someone correct and/or confirm my understanding of CNAME vs A records: > > CNAME should be used for a host that exists on (potentially) another > server but uses that domain. > > A records should be used as an alias for a host but co-exists with other > hosts. There is no such concept as "alias" in DNS. Erase it from your mind. A records point hostnames to IP addresses. CNAME records point hostnames to other hostnames. Except for very rare and temporary cases you shouldn't use CNAME's at all, especially if you don't really understand all of the implications. You should definitely NEVER use a CNAME on the right side of an MX or NS record, it's a violation of the standard. I don't really understand your example, or what you're trying to get at. But there is no reason at all you can't have multiple A records in multiple zones pointing at the same IP address. If I've missed the essence of your question, feel free to try and restate it... Good luck, Doug -- "Welcome to the desert of the real." - Laurence Fishburne as Morpheus, "The Matrix" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message