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Re: [dkim-ops] hammering with a soldering iron, was subdomain vs. cousin domain

2010-09-10 18:50:24
  On 9/10/10 2:45 PM, J.D. Falk wrote:
 On Sep 9, 2010, at 7:34 PM, John Levine wrote:

any organization that wants to use ADSP should be prepared to bear
the costs of doing so, such as making arrangements for valuable
mail to come from a different domain, as Paypal is doing.

 Exactly -- and the RFC agrees.

Its ironic.   A mechanism attempting to mitigate phishing, because it 
lacks a means to authorize third-party services, recommends the use of 
additional domains, where in the case of paypal, this is a cousin 
domain.  The irony is because confusion regarding cousin domains 
significantly reduces the value obtained from email-authentication.

-Doug



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