On Sun, Apr 05, 2009 at 12:21:51AM +0100, John R. Levine wrote:
>>> One of us should send in a separate technical erratum saying that DKIM
>>> key records SHOULD be published only for SDID domains that have
>>> corresponding MX or A records and can receive mail.
>>
>> I believe your later posting on this retracted the suggestion, but this 
>> issue 
>> strike me as one that is very easy (and common) to misunderstand. So it's 
>> worth emphasizing.  Might be worth adding tidbits to the Deployment draft?
>>
>> The d= domain name is permitted to have /no relationship/ to any 
>> mail-sending 
>> or mail-receiving domain name.  Hence, no A, MX, or possibly /any(!)/ DNS 
>> resource records for the name.
>
>Right.  You have to control the branch of the DNS tree where the d= domain 
>would exist, since you need that to be able to install the key records, 
>but the domain doesn't have to exist otherwise.  Once you remember that 
>the big advance of DKIM over its predecessors is to separate the signing 
>domain from the domains in various other headers, this is clearly the 
>right way for it to work.

+1

my thinking has always been 3243242.rep.example.net.


-- 
Jeff Macdonald
[email protected]

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