On 12/12/11 7:15 AM, Anthony Piccione wrote:
>
> We have DKIM set up and working on our primary domain and would now 
> like to have another domain setup for use in sending emails.
>
> For DKIM to also work on this second domain:
>
> 1) Does the second domain need to resolve to the same IP address as 
> the first?
>
No.  DKIM is independent of the IP addresses resolved for the MTA, PRA, 
or MAIL-FROM.
>
> 2) Do we need a separate txt record created for the second domain?
>
If the second domain is a sub-domain of the primary, and there is no 
desire to create author-domain signatures as defined by ADSP, then the 
primary domain keys could be reused.  A better practice publishes 
signatures at each Author-Domain.

-Doug
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