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I'm using dkim-milter, Postfix on Ubuntu (I think I used these instructions for setting up). Anyway, using the reflectors such as Port25, BlackOps and I get passes for DKIM:

X-DKIM: OpenDKIM Filter v2.0.1 o2SGTMSg005616
Authentication-Results:; dkim=pass (1024-bit key); dkim-adsp=pass

dkim=pass (b=miSIxi7TMX; 1:0:good);

Authentication-Results:; dkim=pass (matches From:;

Yahoo gives this:

Authentication-Results:  from=; domainkeys=neutral (no sig);; dkim=permerror (key failed)

Where, obviously, is my site address. Is anyone aware of anything different with Yahoo! that would stop these from signing?

-- As an update, Yahoo! has given me a pass as well, but only once, and then I sent an email again, and it failed. has given me a fail and said:

Authentication-Results:; dkim=permerror
       (verification error: s=mail d2i_PUBKEY_bio() failed); dkim-adsp=unknown

I couldn't find anything useful though on t'internet about this message.


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Yahoo is doing a domain key verification NOT a DKIM one you need to setup domain keys.

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