[ietf-dkim] The URL to my paper describing the DKIM policy options

Michael Thomas mike at mtcc.com
Sun Jul 30 15:55:16 PDT 2006


Jim Fenton wrote:

>Hector Santos wrote:
>  
>
>>With a signature existing, you will always need to check the SSP in order to
>>check for a "Never Sign" or "We don't send mail from domain. Its Forged"
>>expectation.
>>
>>So you always need to check for SSP first.
>>  
>>    
>>
>So you mean "with a valid signature existing?"  If so, isn't that a
>contradiction in the published information, so why should I assume SSP
>is right?
>  
>
Especially when you consider that would be a big fat juicy target
for a would-be DOS attacker: spoof SSP "i don't send email" policy
and now all of the sudden legitimately signed mail looks extremely
suspicious.

       Mike


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