httpwebwitch - 5:16 pm on Sep 15, 2011 (gmt 0)
No I don't have DomainKeys set up.
From the looks of their site, I don't think I'll be setting it up in this decade, either.
Look in the docs, under the heading "Implementation":
The signer needs to add code in the appropriate agent, to perform signing, and they need to modify their DNS administrative tools to permit creation of DKIM key records.
A validator needs to add code to the appropriate agent and then feed the result into the portion of their system needing it, such as a filtering engine.
The mere existence of a valid signature does not imply that the mail is acceptable, such as for delivery. Acceptability requires an assessment phase. Hence the result of signature validation must be fed into a vetting mechanism that is part of the validator's filter.
Seriously, that's it. The whole chapter. That's all you get.
DKIM = Yet another pile of esoteric technology that no one is going to use