Thanks for all your replies. I'm going to have go through these records and resolve these issues by evaluating them one by one since there doesn't seem to be any quick and dirty rules to any of them. On 18 October 2012 08:49, jeff weisberg <jaw+nanog01@tcp4me.com> wrote:
On 17 Oct 2012, at 15:25, Landon Stewart wrote:
The problem is that we have some zones that have records with the same
hostname that have both a CNAME as well as an A record, MX record, SOA record and/or NS record.
# dig @ns1.superb.net +nocmd superbcolo.biz mx +noques +answer
;; ANSWER SECTION: superbcolo.biz. 86400 IN MX 10 superbcolo.biz. superbcolo.biz. 86400 IN CNAME superbenterprise.net.
Should the CNAME just get nuked in all of these cases?
no.
if you nuke them, you'll break something.
you're going to need to go through them all one by one, figure out why the CNAME is there, what it is doing, and how to change it.
for example, "superbcolo.biz" has an MX and CNAME. the CNAME points to "superbenterprise.net", which has an A, and that A has a web server running.
it may be "wrong", but http://superbcolo.biz works. so in this case, you'd need to replace the CNAME with the A. otherwise, you're breaking someone's website. which might be bad.
-- Landon Stewart <LStewart@Superb.Net> Sr. Administrator Systems Engineering Superb Internet Corp - 888-354-6128 x 4199 Web hosting and more "Ahead of the Rest": http://www.superbhosting.net