[dmarc-discuss] Include statement in DMARC DNS record

Tim Draegen tdraegen at agari.com
Fri Jun 1 06:23:11 PDT 2012


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.

Hope this helps,
=- Tim

On Jun 1, 2012, at 2:45 AM, Jesper Knudsen wrote:
> Hi Michiel,
>  
> It’s not specifically the subdomain I am thinking of but more the possibility to alter customers DMARC record without their involvement as I do for their SPF. I am basically just looking for means to achieve the same and think some kind of include statement should do the job.
>  
> /Jesper
>  
> From: michiel at rotorsolutions.nl [mailto:michiel at rotorsolutions.nl] On Behalf Of Michiel van de Vis
> Sent: 1. juni 2012 08:39
> To: Jesper Knudsen
> Subject: Re: [dmarc-discuss] Include statement in DMARC DNS record
>  
> Hi Jesper,
>  
> I dont think this will help you much.
>  
> Because when you use one subdomain, you also need to apply the same policy to all your customers.
> As the DMARC aligment is a per-client procedure, i don't think you need a subdomain for that.
>  
> How do you see this?
>  
> Michiel
> 
> 
> 
> 2012/6/1 Jesper Knudsen <jkn at scanmailx.com>
> As a ESP for many customers without control of the their DNS, it would be very nice if we could alter the DMARC record on behalf of these customers without having them all take action (that will never work anyways). Today they are asked to insert our default record but I can imagine that over time we might want to change the policy, pct or report addresses.
>  
> I would therefore recommend we consider having a include statement in the DMARC record (such as has been done with SPF) so that my customer can create a simple record such as "v=DMARC1; inc=_dmarc.scanmailx.com;”. If using a include statement then:
>  
> 1)      Only one level of recursion
> 
> 2)      No other parameters mush be present
> 
>  
> This will make parsing of the record relative easy and not add to much additional DNS overhead.
>  
> Comments?
>  
> Jesper Knudsen
> Scandinavian Mail eXchange
> Kløvervang 4 -  DK-2970 Hørsholm - Denmark
> Phone: (+45) 36948330 Mobile: (+45) 21791763
> Email: jkn at scanmailx.com - Web: www.scanmailx.com
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>  
> 
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