Experience with DKIM signatures and DCC

John L johnl@iecc.com
Sat Mar 29 17:42:25 UTC 2008

> I wouldn't do anything with DKIM failure at this point, since there are way 
> too many reasons that legit mail could arrive with a valid signature.

Ahem, with an INvalid signature.

> Whitelisting DKIM sigs from people you know and white and blacklisting of IPs 
> with particularly good and bad histories should work well.
> R's,
> John

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