[dmarc-discuss] Include statement in DMARC DNS record
jkn at scanmailx.com
Fri Jun 1 12:32:07 PDT 2012
To the best of my knowledge a CNAME with underscore is not allowed hence I
cannot make a CNAME _dmarc.customerdoamin.com pointing to something that
might have our default DMARC TXT record e.g _dmarc.scanmailx.com.
Maybe I am slow here Friday evening, but I cannot see how a CNAME will help
me "dynamically" changing DMARC record parameters for my customers domains.
From: dmarc-discuss-bounces at blackops.org
[mailto:dmarc-discuss-bounces at blackops.org] On Behalf Of John Levine
Sent: 1. juni 2012 21:08
To: dmarc-discuss at dmarc.org
Subject: Re: [dmarc-discuss] Include statement in DMARC DNS record
> One way to achieve this is to have your customer create a CNAME
> record that points back to your own infrastructure. Then you can
> make changes at will.
It's hard to see anything that a DMARC include would do that a CNAME doesn't
do just as well. Since the DMARC record has a unique name, you don't run
of the problems you do trying to put a CNAME on an MX or A record.
I realize that provisioning systems don't support exotic records, but
CNAMEs are not exotic, and have been around as long as the DNS has.
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